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Christianity (Greek Χριστιανισμός, from the word Xριστός (Christ) is a monotheistic religion centered on the life and teachings of Jesus as presented in the New Testament.

Its followers, known as Christians, believe that Jesus is the begotten Son of God and the Messiah (Christ) prophesied in the Hebrew Bible (the part of scripture common to Christianity and Judaism). To Christians, Jesus Christ is a teacher, the model of a virtuous life, the revealer of God, and most importantly the saviour of humanity who suffered, died, and was resurrected to bring about salvation from sin. Christians maintain that Jesus ascended into heaven, and most denominations teach that Jesus will return to judge the living and the dead, granting everlasting life to his followers. Christians call the message of Jesus Christ the Gospel ("good news") and hence label the written accounts of his ministry as gospels.

Like Judaism and Islam, Christianity is classified as an Abrahamic religion (see also Judeo-Christian). Christianity began as a Jewish sect in the eastern Mediterranean, quickly grew in size and influence over a few decades, and by the 4th century had become the dominant religion within the Roman Empire. During the Middle Ages, most of the remainder of Europe was Christianized, with Christians also being a (sometimes large) religious minority in the Middle East, North Africa, and parts of India. Following the Age of Discovery, through missionary work and colonization, Christianity spread to the Americas and the rest of the world.

Christianity has played a prominent role in the shaping of Western civilization at least since the 4th century. As of the early 21st century, Christianity has between 1.5 billion and 2.1 billion adherents, representing about a quarter to a third of the world's population.

Beliefs

In spite of important differences of interpretation and opinion, Christians share a set of beliefs that they hold as essential to their faith.

Creeds

Creeds (from Latin credo meaning "I believe") are concise doctrinal statements or confessions, usually of religious beliefs. They began as baptismal formulas and were later expanded during the Christological controversies of the fourth and fifth centuries to become statements of faith.

The Apostles Creed (Symbolum Apostolorum) was developed between the second and ninth centuries. It is the most popular creed used in worship by Western Christians. Its central doctrines are those of the Trinity and God the Creator. Each of the doctrines found in this creed can be traced to statements current in the apostolic period. The creed was apparently used as a summary of Christian doctrine for baptismal candidates in the churches of Rome. Since the Apostles Creed is still unaffected by the later Christological divisions, its statement of the articles of Christian faith remain largely acceptable to most Christian denominations:

• belief in God the Father, Jesus Christ as the Son of God and the Holy Spirit
• the death, descent into hell, resurrection, and ascension of Christ
• the holiness of the Church and the communion of saints
• Christ's second coming, the Day of Judgement and salvation of the faithful.

The Nicene Creed, largely a response to Arianism, was formulated at the Councils of Nicaea and Constantinople in 325 and 381 respectively and ratified as the universal creed of Christendom by the Council of Ephesus in 431.

The Chalcedonian Creed, developed at the Council of Chalcedon in 451, though rejected by the Oriental Orthodox Churches, taught Christ "to be acknowledged in two natures, inconfusedly, unchangeably, indivisibly, inseparably": one divine and one human, and that both natures are perfect but are nevertheless perfectly united into one person.

The Athanasian Creed, received in the western Church as having the same status as the Nicene and Chalcedonian, says: "We worship one God in Trinity, and Trinity in Unity; neither confounding the Persons nor dividing the Substance."

Most Christians (Roman Catholics, Orthodox and Protestants alike) accept the use of creeds, and subscribe to at least one of the creeds mentioned above. A minority of Protestants, notably Restorationists, a movement formed in the wake of the Second Great Awakening in the 19th century United States, oppose the use of creeds.

Jesus Christ

The central tenet of Christianity is the belief in Jesus as the Son of God and the Messiah (Christ). The title "Messiah" comes from the Hebrew word מָשִׁיחַ (māšiáħ) meaning anointed one. The Greek translation Template:Polytonic (Christos) is the source of the English word "Christ".

Christians believe that, as the Messiah, Jesus was anointed by God as ruler and savior of humanity, and hold that Jesus' coming was the fulfillment of messianic prophecies of the Old Testament. The Christian concept of the Messiah differs significantly from the contemporary Jewish concept. The core Christian belief is that, through the death and resurrection of Jesus, sinful humans can be reconciled to God and thereby are offered salvation and the promise of eternal life.

While there have been many theological disputes over the nature of Jesus over the first centuries of Christian history, Christians generally believe that Jesus is God incarnate and "true God and true man" (or both fully divine and fully human). Jesus, having become fully human, suffered the pains and temptations of a mortal man, yet he did not sin. As fully God, he defeated death and rose to life again. According to the Bible, "God raised him from the dead," he ascended to heaven, is "seated at the right hand of the Father" and will return again to fulfill the rest of Messianic prophecy such as the Resurrection of the dead, the Last Judgment and final establishment of the Kingdom of God.

According to the Gospels of Matthew and Luke, Jesus was conceived by the Holy Spirit and born from the Virgin Mary. Little of Jesus' childhood is recorded in the canonical Gospels, however infancy Gospels were popular in antiquity. In comparison, his adulthood, especially the week before his death, are well documented in the Gospels contained within the New Testament. The Biblical accounts of Jesus' ministry include: his baptism, miracles, preaching, teaching, and deeds.

Death and resurrection of Jesus

Christians consider the resurrection of Jesus to be the cornerstone of their faith (see 1 Corinthians 15) and the most important event in human history. Among Christian beliefs, the death and resurrection of Jesus are two core events on which much of Christian doctrine and theology is based. According to the New Testament Jesus was crucified, died a physical death, buried within a tomb, and rose from the dead three days later. The New Testament mentions several resurrection appearances of Jesus on different occasions to his twelve apostles and disciples, including "more than five hundred brethren at once," before Jesus' Ascension to heaven. Jesus' death and resurrection are commemorated by Christians in all worship services, with special emphasis during Holy Week which includes Good Friday and Easter Sunday.

The death and resurrection of Jesus are usually considered the most important events in Christian Theology, partly because they demonstrate that Jesus has power over life and death and therefore has the authority and power to give people eternal life.

Christian churches accept and teach the New Testament account of the resurrection of Jesus with very few exceptions.. Some modern scholars use the belief of Jesus' followers in the resurrection as a point of departure for establishing the continuity of the historical Jesus and the proclamation of the early church. Some liberal Christians do not accept a literal bodily resurrection, seeing the story as richly symbolic and spiritually nourishing myth. Arguments over death and resurrection claims occur at many religious debates and interfaith dialogues. Paul the Apostle, an early Christian convert and missionary, wrote, "If Christ was not raised, then all our preaching is useless, and your trust in God is useless." The Unitarian church is one of the few in which a resurrection of Jesus is not a doctrine.

Salvation

Protestantism teaches that eternal salvation is a gift that comes to an individual by God's grace, sometimes defined as "unmerited favor," on the basis of one's personal belief in and dependence on the substitutionary death and resurrection of Jesus Christ. Salvation in this sense refers to God's activities in bringing humans into right relationship with God and with one another through faith in Jesus Christ. It is the belief that one can be saved (rescued) from sin and eternal death. Other concepts used in the study of how salvation is accomplished include conversion, faith, justification, regeneration, and others. Many Protestants believe in the "assurance of salvation" — that God can give the confidence that a believer in Jesus as the Christ has truly received salvation.

Catholicism teaches that while in most cases one must be a baptized Catholic to be saved. it is possible in some circumstances for people to be saved who have not been fully initiated into the Catholic Church. Catholics generally emphasize the role of works and sacraments in attaining salvation. The Catholic Church teaches that faith is important, but it also believes that salvation also requires good works and piety such as obedience to the commandments, participation in the sacraments, church attendance, doing penance and giving alms, reciting prayers and so on, in order to merit eternal life.

The formal study of theology of salvation is Soteriology.

The crucifixion of Jesus is explained as an atoning sacrifice, which, in the words of the Gospel of John, "takes away the sins of the world." One's reception of salvation is related to justification.

The operation and effects of grace are understood differently by different traditions. Roman Catholicism and Eastern Orthodoxy teach the necessity of the free will to cooperate with grace. Reformed theology places distinctive emphasis on grace by teaching that individuals are completely incapable of self-redemption, but the grace of God overcomes even the unwilling heart. Arminianism takes a synergistic approach while Lutheranism and most other Protestant doctrines teaches justification by grace alone through faith alone.

Trinity

Trinity refers to the teaching that the one God comprises three distinct, eternally co-existing persons; the Father (from whom the Son and Spirit proceed), the Son (incarnate in Jesus Christ), and the Holy Spirit. Together, these three persons are sometimes called the Godhead, although there is no single term in use in Scripture to denote the unified Godhead. In the words of the Athanasian Creed, an early statement of Christian belief, "the Father is God, the Son is God, and the Holy Spirit is God, and yet there are not three Gods but one God".

The Trinity is an essential doctrine of mainstream Christianity. "Father, Son and Holy Spirit" represents both the immanence and transcendence of God. God is believed to be infinite and God's presence may be perceived through the actions of Jesus Christ and the Holy Spirit.

According to this doctrine, God is not divided in the sense that each person has a third of the whole; rather, each person is considered to be fully God (see Perichoresis). The distinction lies in their relations, the Father being unbegotten; the Son being eternally begotten of the Father; and the Holy Spirit proceeding from the Father and (in Western theology) from the Son. Regardless of this apparent difference, the three 'persons' are each eternal and omnipotent.

The word trias, from which trinity is derived, is first seen in the works of Theophilus of Antioch. He wrote of "the Trinity of God (the Father), His Word (the Son) and His Wisdom (Holy Spirit)". The term may have been in use before this time. Afterwards it appears in Tertullian. In the following century the word was in general use. It is found in many passages of Origen.

Trinitarians

Trinitarianism denotes those Christians who believe in the concept of the Trinity. Almost all Christian denominations and Churches hold Trinitarian beliefs. Although the words "Trinity" and "Triune" do not appear in the Bible, theologians beginning in the third century developed the term and concept to facilitate comprehension of the New Testament teachings of God as Father, God as Jesus the Son, and God as the Holy Spirit. Since that time, Christian theologians have been careful to emphasize that Trinity does not imply three gods, nor that each member of the Trinity is one-third of an infinite God; Trinity is defined as one God in three Persons.

Non-trinitarians

Nontrinitarianism refers to beliefs systems that reject the doctrine of the Trinity. Various nontrinitarian views, such as adoptionism or modalism, existed in early Christianity, leading to the disputes about Christology. Nontrinitarianism later appeared again in the Gnosticism of the Cathars in the 11th through 13th centuries, in the Age of Enlightenment of the 18th century, and in Restorationism during the 19th century.

Scriptures

Christianity regards the Bible, a collection of canonical books in two parts (the Old Testament and the New Testament), as authoritative. It is believed by Christians to have been written by human authors under the inspiration of the Holy Spirit, and therefore for many it is held to be the inerrant word of God. The books that are considered canon in the Bible vary depending upon the denomination using or defining it. These variations are a reflection of the range of traditions and councils that have convened on the subject. The Bible always includes books of the Jewish scriptures, the Tanakh, and includes additional books and reorganizes them into two parts: the books of the Old Testament primarily sourced from the Tanakh (with some variations), and the 27 books of the New Testament containing books originally written primarily in Greek. The Roman Catholic and Orthodox canons include other books from the Septuagint which Roman Catholics call Deuterocanonical. Protestants consider these books apocryphal. Some versions of the Christian Bible have a separate Apocrypha section for the books not considered canonical by the publisher.

Roman Catholic interpretation

In antiquity, two schools of exegesis developed in Alexandria and Antioch. Alexandrine interpretation, exemplified by Origen, tended to read Scripture allegorically, while Antiochene interpretation adhered to the literal sense, holding that other meanings (called theoria) could only be accepted if based on the literal meaning.

Roman Catholic theology distinguishes two senses of scripture: the literal and the spiritual.

The literal sense of understanding scripture is the meaning conveyed by the words of Scripture. The spiritual sense is further subdivided into:

• the allegorical sense, which includes typology. An example would be the parting of the Red Sea being understood as a "type" (sign) of baptism.
• the moral sense, which understands the scripture to contain some ethical teaching.
• the anagogical sense, which applies to eschatology, eternity and the consummation of the world

Regarding exegesis, following the rules of sound interpretation, Roman Catholic theology holds:

• the injunction that all other senses of sacred scripture are based on the literal
• that the historicity of the Gospels must be absolutely and constantly held
• that scripture must be read within the "living Tradition of the whole Church" and
• that "the task of interpretation has been entrusted to the bishops in communion with the successor of Peter, the Bishop of Rome".

Protestant interpretation

Clarity of Scripture

Protestant Christians believe that the Bible is a self-sufficient revelation, the final authority on all Christian doctrine, and revealed all truth necessary for salvation. This concept is known as Sola scriptura. Protestants characteristically believe that ordinary believers may reach an adequate understanding of Scripture because Scripture itself is clear (or "perspicuous"), because of the help of the Holy Spirit, or both. Martin Luther believed that without God's help Scripture would be "enveloped in darkness." He advocated "one definite and simple understanding of Scripture." John Calvin wrote, "all who...follow the Holy Spirit as their guide, find in the Scripture a clear light." The Second Helvetic (Latin for "Swiss") Confession, composed by the pastor of the Reformed church in Zurich (successor to Protestant reformer Zwingli) was adopted as a declaration of doctrine by most European Reformed churches.

Original intended meaning

Protestants stress the meaning conveyed by the words of Scripture, the historical-grammatical method. The historical-grammatical method or grammatico-historical method is a effort in Biblical hermeneutics to find the intended original meaning in the text. This original intended meaning of the text is drawn out through examination of the passage in light of the grammatical and syntactical aspects, the historical background, the literary genre as well as theological (canonical) considerations. The historical-grammatical method distinguishes between the one original meaning and the significance of the text. The significance of the text includes the ensuing use of the text or application. The original passage is seen as having only a single meaning or sense. As Milton S. Terry said: "A fundamental principle in grammatico-historical exposition is that the words and sentences can have but one significance in one and the same connection. The moment we neglect this principle we drift out upon a sea of uncertainty and conjecture." Technically speaking, the grammatical-historical method of interpretation is distinct from the determination of the passage's significance in light of that interpretation. Taken together, both define the term (Biblical) hermeneutics.

Some Protestant interpreters make use of typology.

Afterlife and Eschaton

Most Christians believe that human beings experience divine judgement and are rewarded either with eternal life or eternal damnation. This includes the general judgement at the Resurrection of the dead (see below) as well as the belief (held by Catholics, Orthodox and some Protestants) in a judgement particular to the individual soul upon physical death.

In Roman Catholicism, those who die in a state of grace, i.e. without any mortal sin separating them from God, but are still imperfectly purified from the effects of sin, undergo purification through the intermediate state of purgatory to achieve the holiness necessary for entrance into God's presence. Those who have attained this goal are called saints (Latin sanctus, "holy").

Some churches who do not believe in particular judgment, e.g. Jehovahs Witnesses, hold that the soul sleeps until this time. These groups avoid the term saints.

Christians believe that at the second coming of Christ at the end of time, all who have died will be resurrected bodily from the dead for the Last Judgment, whereupon Jesus will fully establish the Kingdom of God in fulfillment of scriptural prophecies.

Universal Reconciliation, also called Apocatastasis, is the view that all will eventually experience salvation, rejecting the concept that hell is everlasting. Such a view was held in the 3rd century by Origen but was condemned as heretical. The notion was revived after the Reformation, e.g. by the Anabaptist theologian Hans Denck. Christians espousing this view are known as Universalists.

Worship

Justin Martyr described 2nd century Christian liturgy in his First Apology (c. 150) to Emperor Antoninus Pius, and his description remains relevant to the basic structure of Christian liturgical worship:

"And on the day called Sunday, all who live in cities or in the country gather together to one place, and the memoirs of the apostles or the writings of the prophets are read, as long as time permits; then, when the reader has ceased, the president verbally instructs, and exhorts to the imitation of these good things. Then we all rise together and pray, and, as we before said, when our prayer is ended, bread and wine and water are brought, and the president in like manner offers prayers and thanksgivings, according to his ability, and the people assent, saying Amen; and there is a distribution to each, and a participation of that over which thanks have been given, and to those who are absent a portion is sent by the deacons. And they who are well to do, and willing, give what each thinks fit; and what is collected is deposited with the president, who succours the orphans and widows and those who, through sickness or any other cause, are in want, and those who are in bonds and the strangers sojourning among us, and in a word takes care of all who are in need."

Thus, as Justin described, Christians assemble for communal worship on Sunday, the day of the resurrection, though other liturgical practices often occur outside this setting. Scripture readings are drawn from the Old and New Testaments, but especially the Gospels. Often these are arranged on an annual cycle, using a book called a lectionary. Instruction is given based on these readings, called a sermon, or homily. There are a variety of congregational prayers, including thanksgiving, confession, and intercession, which occur throughout the service and take a variety of forms including recited, responsive, silent, or sung. The Lord's Prayer, or Our Father, is regularly prayed. The Eucharist (called Holy Communion, or the Lord's Supper) is the part of liturgical worship that consists of a consecrated meal, usually bread and wine. Justin Martyr described the Eucharist:

"And this food is called among us Eukaristia , of which no one is allowed to partake but the man who believes that the things which we teach are true, and who has been washed with the washing that is for the remission of sins, and unto regeneration, and who is so living as Christ has enjoined. For not as common bread and common drink do we receive these; but in like manner as Jesus Christ our Saviour, having been made flesh by the Word of God, had both flesh and blood for our salvation, so likewise have we been taught that the food which is blessed by the prayer of His word, and from which our blood and flesh by transmutation are nourished, is the flesh and blood of that Jesus who was made flesh."

Some Christian denominations view communion as indicating those who are already united in the church, restricting participation to their members not in a state of mortal sin (closed communion). Most other churches view communion as a means to unity, rather than an end, and invite all Christians or even anyone to participate (open communion). In some denominations, participation is decided by prior arrangement with a church leader.

Some groups depart from this traditional liturgical structure. A division is often made between "High" church services, characterized by greater solemnity and ritual, and "Low" services, but even within these two categories there is great diversity in forms of worship. Seventh-day Adventists meet on Saturday (the original Sabbath), while others do not meet on a weekly basis. Charismatic or Pentecostal congregations may spontaneously feel led by the Holy Spirit to action rather than follow a formal order of service, including spontaneous prayer. Quakers sit quietly until moved by the Holy Spirit to speak. Some Evangelical services resemble concerts with rock and pop music, dancing, and use of multimedia. For groups which do not recognize a priesthood distinct from ordinary believers the services are generally lead by a minister, preacher, or pastor. Still others may lack any formal leaders, either in principle or by local necessity. Some churches use only a cappella music, either on principle (e.g. many Churches of Christ object to the use of instruments in worship) or by tradition (as in Orthodoxy).

Worship can be varied for special events like baptisms or weddings in the service or significant feast days. In the early church Christians and those yet to complete initiation would separate for the Eucharistic part of the worship. In many churches today, adults and children will separate for all or some of the service to receive age-appropriate teaching. Such children's worship is often called Sunday school or Sabbath school (Sunday schools are often held before rather than during services).

Sacraments

In Christian belief and practice, a sacrament is a rite, instituted by Christ, that mediates grace, constituting a sacred mystery. The term is derived from the Latin word sacramentum, which was used to translate the Greek word for mystery. Views concerning both what rites are sacramental, and what it means for an act to be a sacrament vary among Christian denominations and traditions.

The most conventional functional definition of a sacrament is that it is an outward sign, instituted by Christ, that conveys an inward, spiritual grace through Christ. The two most widely accepted sacraments are Baptism and the Eucharist, however, the majority of Christians recognize seven Sacraments or Divine Mysteries: Baptism, Confirmation (Chrismation in the Orthodox tradition), and the Eucharist, Holy Orders, Reconciliation of a Penitent (confession), Anointing of the Sick, and Matrimony. Taken together, these are the Seven Sacraments as recognised by churches in the High church tradition - notably Roman Catholic, Eastern Orthodox, Oriental Orthodox, Independent Catholic, Old Catholic and some Anglicans. Most other denominations and traditions typically affirm only Baptism and Eucharist as sacraments, while some Protestant groups, such as the Quakers, reject sacramental theology. Some Christian denominations who believe these rites do not communicate grace prefer to call them ordinances.

Liturgical calendar

Roman Catholics, Anglicans, Eastern Christians, and traditional Protestant communities frame worship around a liturgical calendar. This includes holy days, such as solemnities which commemorate an event in the life of Jesus or the saints, periods of fasting such as Lent, and other pious events such as memoria or lesser festivals commemorating saints. Christian groups that do not follow a liturgical tradition often retain certain celebrations, such as Christmas, Easter and Pentecost. A few churches make no use of a liturgical calendar.

Symbols

The cross, which is today one of the most widely recognised symbols in the world, was used as a Christian symbol from the earliest times. Tertuallian, in his book De Corona, tells how it was already a tradition for Christians to trace repeatedly on their foreheads the sign of the cross. Although the cross was known to the early Christians, the crucifix did not appear in use until the fifth century.

Among the symbols employed by the primitive Christians, that of the fish seems to have ranked first in importance. From monumental sources such as tombs it is known that the symbolic fish was familiar to Christians from the earliest times. The fish was depicted as a Christian symbol in the first decades of the second century. Its popularity among Christians was due principally, it would seem, to the famous acrostic consisting of the initial letters of five Greek words forming the word for fish (Ichthys), which words briefly but clearly described the character of Christ and the claim to worship of believers: Iesous Christos Theou Yios Soter, meaning, Jesus Christ, Son of God, Saviour.

Christians from the very beginning adorned their tombs with paintings of Christ, of the saints, of scenes from the Bible and allegorical groups. The catacombs are the cradle of all Christian art. The first Christians had no prejudice against images, pictures, or statues. The idea that they must have feared the danger of idolatry among their new converts is disproved in the simplest way by the pictures even statues, that remain from the first centuries. Other major Christian symbols include the chi-rho monogram, the dove (symbolic of the Holy Spirit), the sacrificial lamb (symbolic of Christ's sacrifice), the vine (symbolising the necessary connectedness of the Christian with Christ) and many others. These all derive from writings found in the New Testament.

History and origins

Early Church and Christological Councils

Christianity began as a Jewish sect in the eastern Mediterranean in the mid-first century. Under the leadership of the Apostles, especially Peter and Paul, and the early bishops, which they saw as successors of the Twelve Apostles.

From the beginning, Christians were subject to various persecutions. This involved even death for Christians such as Stephen and James, son of Zebedee. Larger-scale persecutions followed at the hands of the authorities of the Roman Empire, beginning with the year 64, when Emperor Nero blamed them for the Great Fire of Rome. According to Church tradition, it was under Nero's persecution that early Church leaders Peter and Paul were each martyred in Rome. Further widespread persecutions of the Church occurred under nine subsequent Roman emperors, most intensely under Decius and Diocletian. From the year 150, Christian teachers began to produce theological and apologetic works aimed at defending the faith. These authors are known as the Church Fathers, and study of them is called Patristics. Notable early Fathers include Ignatius of Antioch, Polycarp, Justin Martyr, Irenaeus, Tertullian, Clement of Alexandria and Origen.

Christianity was legalized in the fourth century, when Constantine I issued an edict of toleration in 313. On 27 February 380, Emperor Theodosius I enacted a law establishing Catholic Christianity as the official religion of the Roman Empire. From at least the 4th century, Christianity has played a prominent role in the shaping of Western civilization.

Constantine was also instrumental in the convocation of the First Council of Nicaea in 325, which sought to address the Arian heresy and formulated the Nicene Creed, which is still used by the Roman Catholic Church, Eastern Orthodoxy, Anglican Communion, and many Protestant churches. Nicaea was the first of a series of Ecumenical (worldwide) Councils which formally defined critical elements of the theology of the Church, notably concerning Christology. The Assyrian Church of the East did not accept the third and following Ecumenical Councils, and are still separate today.

Early Middle Ages

With the decline and fall of the Roman Empire in the west, the papacy became a political player, first visible in Pope Leo's diplomatic dealings with Huns and Vandals. The church also entered into a long period of missionary activity and expansion among the former barbarian tribes. Catholicism spread among the Germanic peoples (initially in competition with Arianism), the Celtic and Slavic peoples, the Hungarians and the Scandinavian and Baltic peoples.

Around 500, St. Benedict set out his Monastic Rule, establishing a system of regulations for the foundation and running of monasteries. Monasticism became a powerful force throughout Europe, and gave rise to many early centers of learning, most famously in Ireland, Scotland and Gaul, contributing to the Carolingian Renaissance of the 9th century.

From the 7th century onwards, Islam conquered the Christian lands of the Middle East, North Africa and much of Spain, resulting in oppression of Christianity and numerous military struggles, including the Crusades, the Spanish Reconquista and wars against the Turks.

The Middle Ages brought about major changes within the church. Pope Gregory the Great dramatically reformed ecclesiastical structure and administration. In the early 8th century, iconoclasm became a divisive issue, when it was sponsored by the Byzantine emperors. The Second Ecumenical Council of Nicaea (787) finally pronounced in favour of icons. In the early 10th century, western monasticism was further rejuvenated through the leadership of the great Benedictine monastery of Cluny.

High and Late Middle Ages

In the west, from the 11th century onward, older cathedral schools developed into universities (see University of Paris, University of Oxford, and University of Bologna.) Originally teaching only theology, these steadily added subjects including medicine, philosophy and law, becoming the direct ancestors of modern western institutions of learning.

Accompanying the rise of the "new towns" throughout Western Europe, mendicant orders were founded, bringing the consecrated religious life out of the monastery and into the new urban setting. The two principal mendicant movements were the Franciscans and the Dominicans founded by St. Francis and St. Dominic respectively. Both orders made significant contributions to the development of the great universities of Europe. Another new order were the Cistercians, whose large isolated monasteries spearheaded the settlement of former wilderness areas. In this period church building and ecclesiastical architecture reached new heights, culminating in the orders of Romanesque and Gothic architecture and the building of the great European cathedrals.

From 1095 under the pontificate of Urban II, the Crusades were launched. These were a series of military campaigns in the Holy Land and elsewhere, initiated in response to pleas from the Byzantine Emperor Alexios I for aid against Turkish expansion. The Crusades ultimately failed to stifle Islamic aggression and even contributed to Christian enmity with the sacking of Constantinople during the Fourth Crusade.

Over a period stretching from the 7th to the 13th century, the Christian Church underwent gradual alienation, resulting in a schism dividing it into a Western, largely Latin branch, the Roman Catholic Church, and an Eastern, largely Greek, branch, the Orthodox Church. These two churches disagree on a number of administrative, liturgical, and doctrinal issues, most notably papal primacy of jurisdiction. The Second Council of Lyon (1274) and the Council of Florence (1439) attempted to reunite the churches, but in both cases the Eastern Orthodox refused to implement the decisions and the two principal churches remain in schism to the present day. However, the Roman Catholic Church has achieved union with various smaller eastern churches.

Beginning around 1184, following the crusade brought about by the Cathar heresy, various institutions, broadly referred to as the Inquisition, were established with the aim of suppressing heresy and securing religious and doctrinal unity within Christianity through conversion and prosecution.

Protestant Reformation and Counter-Reformation

The 15th-century Renaissance brought about a renewed interest in ancient and classical learning. Another major schism, the Reformation, resulted in the splintering of the Western Christendom into several Christian denominations. Martin Luther in 1517 protested against the sale of indulgences and soon moved on to deny several key points of Roman Catholic doctrine. Others like Zwingli and Calvin further criticized Roman Catholic teaching and worship. These challenges developed into the movement called Protestantism, which repudiated the primacy of the pope, the role of tradition, the seven sacraments, and other doctrines and practices. Reformation in England began in 1534, when King Henry VIII had himself declared head of the Church of England. Beginning in 1536, the monasteries throughout England, Wales, and Ireland were dissolved.

Partly in response to the Protestant Reformation, the Roman Catholic Church engaged in a substantial process of reform and renewal, known as the Counter-Reformation or Catholic Reform. The Council of Trent clarified and reasserted Roman Catholic doctrine. During the following centuries, competition between Roman Catholicism and Protestantism became deeply entangled with political struggles among European states.

Meanwhile, the discovery of America by Christopher Columbus in 1492 brought about a new wave of missionary activity. Partly from missionary zeal, but under the impetus of colonial expansion by the European powers, Christianity spread to the Americas, Oceania, East Asia, and sub-Saharan Africa.

Throughout Europe, the divides caused by the Reformation led to outbreaks of religious violence and the establishment of separate state religions in Western Europe: Lutheranism in parts of Germany and in Scandinavia and Anglicanism in England in 1534. Ultimately, these differences led to the outbreak of conflicts in which religion played a key factor. The Thirty Years' War, the English Civil War, and the French Wars of Religion are prominent examples. These events intensified the Christian debate on persecution and toleration.

Christianity in the Modern Era

In the Modern Era, Christianity was confronted with various forms of skepticism and with certain modern political ideologies such as liberalism, nationalism and socialism. Events ranged from mere anti-clericalism to violent outbursts against Christianity such as the Dechristianisation during the French Revolution, the Spanish Civil War, and general hostility of Marxist movements, especially the Russian Revolution.

Christian commitment in Europe dropped as modernity and secularism came into their own in Western Europe, while religious commitments in America have been generally high in comparison to Western Europe. The late 20th century has shown the shift of Christian adherence to the Third World and southern hemisphere in general, with western civilization no longer the chief standard bearer of Christianity.

Demographics

With an estimated number of adherents that ranges between 1.5 billion and 2.1 billion, split into around 34,000 separate denominations, Christianity is the world's largest religion. The Christian share of the world's population has stood at around 33 per cent for the last hundred years. This masks a major shift in the demographics of Christianity; large increases in the developing world have been accompanied by substantial declines in the developed world, mainly in Europe and North America. It is still the predominant religion in Europe, the Americas, the Philippines, and Southern Africa. However it is declining in some areas including Oceania (Australia and New Zealand), Northern Europe (including Great Britain, Scandinavia and other places), France, Germany, the Canadian provinces of Ontario, British Columbia, and Quebec, the Western and Northern portions of the United States, and parts of Asia (especially the Middle East, South Korea, Taiwan and Macau).

In most countries in the developed world, church attendance among people who continue to identify themselves as Christians has been falling over the last few decades. Some sources view this simply as part of a drift away from traditional membership institutions, while others link it to signs of a decline in belief in the importance of religion in general.

Denominations

There is a diversity of doctrines and practices among groups calling themselves Christian. These groups are sometimes classified under denominations, though for theological reasons many groups reject this classification system. Christianity may be broadly represented as being divided into five main groupings: Roman Catholicism, Eastern Orthodoxy, Oriental Orthodoxy, Protestantism and Restorationism.

Christian denominations in the English-speaking world
International associationsInterdenominational associations World Council of Churches World Evangelical Alliance Denominational associations Friends World Committee for Consultation Mennonite World Conference Anglican Communion Baptist World Alliance World Convention of Churches of Christ Eastern Orthodox Church Confessional Evangelical Lutheran Conference International Lutheran Council Lutheran World Federation World Methodist Council Pentecostal World Conference International Conference of Reformed Churches Reformed Ecumenical Council World Communion of Reformed Churches World Reformed Fellowship Regional associations Africa All Africa Conference of Churches (AACC) Association of Evangelicals of Africa (AEA) All Africa Baptist Fellowship Africa Lutheran Communion Asia Christian Conference of Asia (CCA) Evangelical Fellowship of Asia Asia Pacific Baptist Federation Asia Lutheran Communion Caribbean Caribbean Conference of Churches (CCC) Evangelical Association of the Caribbean Caribbean Baptist Fellowship Europe Conference of European Churches (CEC) European Evangelical Alliance European Baptist Federation Pentecostal European Fellowship Middle East Middle East Council of Churches (MECC) Latin America Latin American Council of Churches (CLAI) Latin American Evangelical Fellowship (FIDE) Union of Baptists in Latin America North America North American Baptist Fellowship Assembly of Canonical Orthodox Bishops of the United States of America North American Presbyterian and Reformed Council Pacific Pacific Conference of Churches (PCC) Evangelical Fellowship of the South Pacific (EFSP) Asia Pacific Baptist Federation
Australia Christian denominations in Australia Australian interchurch Australian Evangelical Alliance  • website National Council of Churches Catholic Catholic Church in Australia Anglican Anglican Church of Australia Holiness and Pietist Christian and Missionary Alliance Christian Outreach Centre Church of the Nazarene Salvation Army Seventh-day Adventist Church Historical Protestantism Australian Friends Australian Baptist Ministries Open Brethren Christian Reformed Churches of Australia Churches of Christ Fellowship of Congregational Churches Lutheran Church of Australia Presbyterian Church of Australia Uniting Church in Australia Wesleyan Methodist Church of Australia Eastern Christian Antiochian Orthodox of Australia and New Z. Greek Orthodox Archdiocese of Australia Serbian Orthodox of Australia and New Z. Non-Chalcedonic Coptic Orthodox Church in Australia Pentecostal and related Australian Christian Churches (AOG) Christian City Church Intl. CRC Churches International Revival Centres International Vineyard Churches Australia Worldwide Church of God Other LDS Church v t e
Canada Christian denominations in Canada Canadian interchurch Canadian Council of Churches Assembly of Canonical Orthodox Bishops of the United States of America North Am. Presbyterian and Reformed Council Anabaptist & Friends Canadian Mennonite Brethren Churches Canadian Yearly Meeting (Quakers) Mennonite Church Canada Baptist & Stone-Campbell Association of Regular Baptist Churches Baptist General Conference of Canada Canadian Baptist Ministries Canadian Convention of Southern Baptists Fellowship of Evgcl. Baptist Churches, Canada North American Baptist Conference Christian Church (Disciples of Christ) Evangelical Christian Church in Canada Anglican & Catholic Anglican Church of Canada Anglican Church in North America Polish National Catholic Church Catholic Church in Canada Ukrainian Catholic, Winnipeg Holiness & Pietist Christian and Missionary Alliance, Canada Church of the Nazarene Evangelical Free Church of Canada Baptist General Conference of Canada The Salvation Army Wesleyan Church Lutheran Evangelical Lutheran Church in Canada Lutheran Church–Canada Wisconsin Evangelical Lutheran Synod Methodist British Methodist Episcopal Church Free Methodist Church in Canada United Church of Canada Eastern & Oriental Orthodox Antiochian Orthodox Archdiocese, N.Am. Greek Orthodox Metropolis of Toronto Serbian Orthodox Eparchy of Canada Orthodox Church in America American-Canadian Macedonian Orthodox Diocese Russian Orthodox Church Outside Russia Ukrainian Orthodox Church of Canada Armenian Apostolic Diocese of Am. Coptic Orthodox Church in Canada Pentecostal Apostolic Church of Pentecost Canadian Assemblies of God Church of God of Prophecy Intl. Foursquare Gospel, Canada Intl. Pentecostal Holiness Church Pentecostal Assemblies of Canada Pentecostal Church of God United Pentecostal Church Intl. Presbyterian & Reformed Canadian and American Reformed Churches Christian Reformed Church in North America L'Église réformée du Québec Presbyterian Church in Canada Presbyterian Church in America Reformed Church in America United Church of Canada Other Evangelical Orthodox Church Messianic Jewish Alliance of America Plymouth Brethren Seventh-day Adventist Church in Canada LDS Church Vineyard Canada Watch Tower Bible and Tract Society of Canada v t e
Ireland Christian denominations in Ireland Church of Ireland (Anglican) Association of Baptist Churches in Ireland Catholic Church in Ireland Christian Churches Ireland Elim Pentecostal Church Presbyterian Church in Ireland Irish interchurch Irish Council of Churches Churches Together in Britain and Ireland Evangelical Alliance, UK v t e
New Zealand Christian denominations in New Zealand New Zealand interchurch National Council of Churches Māori Council of Churches Catholic Catholic Church in New Zealand Anglican Anglican Church of New Zealand Holiness and Pietist Christian and Missionary Alliance Church of the Nazarene Salvation Army Seventh-day Adventist Church Historical Protestantism Baptist Union of New Zealand Open Brethren Fellowship of Congregational Churches Lutheran Church of Australia and New Zealand Methodist Church of New Zealand New Zealand Friends Presbyterian Church of New Zealand Wesleyan Methodist Church in New Zealand Eastern Christian Antiochian Orthodox of Australia and New Zealand Greek Orthodox Archdiocese of New Zealand Macedonian Orthodox Diocese of Australia and New Zealand Serbian Orthodox of Australia and New Zealand Non-Chalcedonic Coptic Orthodox Church in Australia and New Zealand Pentecostal and related Assemblies of God CRC Churches International Revival Centres International Vineyard Churches New Zealand Worldwide Church of God Other LDS Church v t e
Nigeria Christian denominations in Nigeria Nigerian interchurch Christian Association of Nigeria Fellowship of Churches of Christ in Nigeria African initiated Cherubim and Seraphim Society Eternal Sacred Order of Cherubim and Seraphim Church of God Mission International Church of the Lord (Aladura) Anglican The African Church Church of Nigeria Anabaptist Church of the Brethren in Nigeria Baptist Mambila Baptist Convention of Nigeria Nigerian Baptist Convention Catholic Catholic Church in Nigeria Holiness and Methodist African Methodist Episcopal Church in Nigeria United Methodist Church of Nigeria Lutheran Lutheran Church of Christ in Nigeria Lutheran Church of Nigeria Pentecostal The Apostolic Church Nigeria Christ Apostolic Church Deeper Christian Life Ministry General Council of the Assemblies of God Nigeria Gospel Faith Mission International Church of the Foursquare Gospel The Lord's Chosen Charismatic Revival Movement New Apostolic Church in Nigeria Redeemed Christian Church of God Winners' Chapel Presbyterian and Reformed Christian Reformed Church of Nigeria Church of Christ in Nigeria Church of Christ in the Sudan Among the Tiv Evangelical Reformed Church of Christ N.K.S.T Presbyterian Church of Nigeria Reformed Church of Christ in Nigeria Other Protestant Churches of Christ in Nigeria Evangelical Church of West Africa QIC-United Evangelical Church Seventh-day Adventist Church in Nigeria Word of Faith Ministries v t e
Papua New Guinea Christian denominations in Papua New Guinea v t e Papua New Guinean interchurch Papua New Guinea Council of Churches Anglican Anglican Church of Papua New Guinea Catholic Catholic Church in Papua New Guinea Lutheran Evangelical Lutheran Church of PNG Gutnius Lutheran Church Methodist and PresbyterianUnited Church Others Baptists Evangelical Alliance Iglesia ni Cristo Jehovah's Witnesses Members Church of God International Pentecostalism Salvation Army Seventh-day Adventist Church Tertiary Students Christian Fellowship v t e
South Africa Christian denominations in South Africa South African interchurch South African Council of Churches Catholic Catholic Church in South Africa Anglican Anglican Church Reformed Evangelical Anglican Church Holiness and AIC Die Heilsleër Zion Christian Church Pentecostal Apostolic Faith Mission Protestantism, Other Baptist Union Evangelical Lutheran Church LDS Church Methodist Church Reformed Dutch Reformed: NGK Dutch Reformed: NHK Evangelical Presbyterian Church Presbyterian Church of Africa Reformed Church in Africa Reformed Churches: GKSA United Congregational Church Uniting Presbyterian Church Uniting Reformed Church v t e
United Kingdom Christian denominations in the United Kingdom v t e British interchurch Affinity (formerly British Evangelical Council) Churches Together in Britain and Ireland Evangelical Alliance, UK Fellowship of Independent Evangelical Churches Churches Together in England Action of Churches Together, Scotland (ACTS) Churches Together in Wales Evangelical Movement of Wales Anglican Church of England Church of Ireland Scottish Episcopal Church Church in Wales Baptist Association of Baptist Churches in Ireland Baptist Union of Great Britain Baptist Union of Scotland Baptist Union of Wales Catholic Catholic Church in the United Kingdom Catholic Church in England and Wales Catholic Church in Ireland Catholic Church in Scotland Lutheran Lutheran Church in Great Britain Methodist and Holiness Methodist Church of Great Britain Methodist Church in Ireland Free Methodist Church Wesleyan Holiness Church Church of the Nazarene Salvation Army New Church Movement Newfrontiers Pioneer Church OrthodoxEastern Orthodox Greek Orthodox of G.B. Georgian Orthodox Romanian Orthodox Bulgarian Orthodox Oriental Orthodox Armenian Apostolic British Orthodox Coptic Orthodox Eritrean Orthodox Ethiopian Orthodox Syriac Orthodox Pentecostal Assemblies of God Church of God in Christ Elim Pentecostal Church Presbyterian and Reformed Asso. Presbyterian Churches, Scotland Church of Scotland Congregational Federation Evangelical Presbyterian Church Newfrontiers Presbyterian Church in Ireland Presbyterian Church of Wales United Free Church of Scotland United Reformed Church Other General Assembly of Unitarian and Free Christian Churches LDS Church in England Quakers Seventh-day Adventist Church v t e
United States Christian denominations in the United States American interchurch National Association of Evangelicals National Council of Churches Churches Uniting in Christ Anabaptist Church of the Brethren Mennonite Church USA Amish Anglican Anglican Church in North America Episcopal Church Baptist Alliance of Baptists American Baptist Association American Baptist Churches Baptist Bible Fellowship International Baptist Missionary Association of America Conservative Baptist Association of America Converge General Association of Regular Baptist Churches National Association of Free Will Baptists National Primitive Baptist Convention of the U.S.A. North American Baptist Conference Southern Baptist Convention Holiness Baptist Churches Independent Baptist Churches African-American Baptist National Baptist Convention of America National Baptist Convention, USA, Inc. National Missionary Baptist Convention of America Progressive National Baptist Convention Catholic Catholic Church in the United States Eastern ChristianEastern Orthodox Antiochian Orthodox Christian Archdiocese Greek Orthodox Archdiocese of America Orthodox Church in America Russian Orthodox Church Outside Russia Serbian Orthodox Church in USA American-Canadian Macedonian Orthodox Diocese Russian Orthodox Church Outside Russia Ukrainian Orthodox Church of the USA Oriental Orthodox Armenian Apostolic Church in USA Coptic Orthodox Church in USA Syriac Orthodox Church Orthodox Tewahedo (Ethiopian Orthodox Tewahedo Church, Eritrean Orthodox Tewahedo Church) Eastern Protestant P'ent'ay Evangelical Orthodox Church Assyrian Evangelical Church Assyrian Pentecostal Church Mar Thoma Syrian Church Armenian Evangelical Church Eastern Catholic Lutheran Evangelical Lutheran Church in America Lutheran Church – Missouri Synod North American Lutheran Church Wisconsin Evangelical Lutheran Synod Methodist and Holiness African Methodist Episcopal Church African Methodist Episcopal Zion Church Christian Methodist Episcopal Church Christian and Missionary Alliance Church of God (Anderson, Indiana) Church of the Nazarene Free Methodist Church Global Methodist Church The Salvation Army United Methodist Church Wesleyan Church PentecostalHoliness Pentecostal Church of God (Cleveland, Tennessee) Church of God in Christ Church of God of Prophecy International Pentecostal Holiness Church Finished Work Pentecostal Assemblies of God Church on the Rock International Full Gospel Fellowship International Church of the Foursquare Gospel Pentecostal Church of God Oneness Pentecostal Pentecostal Assemblies of the World United Pentecostal Church Intl. Presbyterian and Reformed Christian Reformed Church in North America Conservative Congregational Christian Conference Cumberland Presbyterian Church ECO: A Covenant Order of Evangelical Presbyterians Evangelical Presbyterian Church Korean Presbyterian Church in America International Council of Community Churches National Association of Congregational Christian Churches Presbyterian Church (USA) Presbyterian Church in America Reformed Church in America United Church of Christ Radical Pietist Evangelical Covenant Church Evangelical Free Church of America Converge Stone-Campbell Christian Church (Disciples of Christ) Christian churches and churches of Christ Churches of Christ International Churches of Christ Other LDS Church The Religious Society of Friends (Quakers) Community of Christ Grace Gospel Fellowship IFCA International Jehovah's Witnesses Messianic Jewish Alliance of America Plymouth Brethren Seventh-day Adventist Church Unitarian Universalist Christian Fellowship Vineyard USA v t e
v t e

Roman Catholicism and other Catholic groups

The (Roman) Catholic Church is comprised of those particular churches, headed by bishops, in communion with the Pope, the Bishop of Rome, as its highest authority in matters of faith, morality and Church governance. Like the Eastern Orthodox, the Roman Catholic Church through Apostolic succession traces its origins to the Christian community founded by Jesus Christ. Catholics maintain that the "one, holy, catholic and apostolic church" founded by Jesus subsists fully in the Roman Catholic Church, but also acknowledges other Christian churches and communities and works towards reconciliation among all Christians. The Roman Catholic faith is detailed in the Catechism of the Catholic Church.

The 2,782 sees are grouped into 23 particular rites, the largest being the Latin Rite, each with distinct traditions regarding the liturgy and the administering the sacraments. With more than one billion baptized members, the Roman Catholic Church is the largest church representing over half of all Christians and one sixth of the world's population.

Various smaller communities, such as the Old Catholic and Independent Catholic Churches, include the word Catholic in their title, and share much in common with Roman Catholicism but are no longer in communion with the See of Rome. The Old Catholic Church is in communion with the Anglican Communion.

Eastern Orthodoxy

Eastern Orthodoxy is comprised of those churches in communion with the Patriarchal Sees of the East, such as the Ecumenical Patriarch of Constantinople. Like the Roman Catholic Church, the Eastern Orthodox Church also traces its heritage to the foundation of Christianity through Apostolic succession and has an episcopal structure, though the autonomy of the individual, mostly national churches is emphasized. A number of conflicts with Western Christianity over questions of doctrine and authority culminated in the Great Schism. Eastern Orthodoxy is the second largest single denomination in Christianity, with over 200 million adherents.

Oriental Orthodoxy

The Oriental Orthodox Churches (also called Old Oriental Churches) are those eastern churches that recognize the first three ecumenical councils — Nicaea, Constantinople and Ephesus — but reject the dogmatic definitions of the Council of Chalcedon and instead espouse a Miaphysite christology.

Protestantism

In the 16th century, Martin Luther, Huldrych Zwingli, and John Calvin inaugurated what has come to be called Protestantism. Luther's primary theological heirs are known as Lutherans. Zwingli and Calvin's heirs are far broader denominationally, and are broadly referred to as the Reformed Tradition. Most Protestant traditions branch out from the Reformed tradition in some way. In addition to the Lutheran and Reformed branches of the Reformation, there is Anglicanism after the English Reformation. The Anabaptist tradition was largely ostracized by the other Protestant parties at the time, but has achieved a measure of affirmation in more recent history.

The oldest Protestant groups separated from the Roman Catholic Church in the 16th century Protestant Reformation, followed in many cases by further divisions. For example, the Methodist Church grew out of Anglican minister John Wesley's evangelical and revival movement in the Anglican Church. Several Pentecostal and non-denominational Churches, which emphasize the cleansing power of the Holy Spirit, in turn grew out of the Methodist Church. Because Methodists, Pentecostals, and other evangelicals stress "accepting Jesus as your personal Lord and Savior", which comes from John Wesley's emphasis of the New Birth, they often refer to themselves as being born-again.

Estimates of the total number of Protestants are very uncertain, partly because of the difficulty in determining which denominations should be placed in these categories, but it seems clear that Protestantism is the second largest major group of Christians after Roman Catholicism in number of followers (although the Eastern Orthodox Church is larger than any single Protestant denomination).

A special grouping are the Anglican churches descended from the Church of England and organised in the Anglican Communion.. Some Anglican churches consider themselves both Protestant and Catholic. Some Anglicans consider their church a branch of the "One Holy Catholic Church" alongside of the Roman Catholic and Eastern Orthodox Churches, a concept rejected by the Roman Catholic Church and some Eastern Orthodox.

Some Christians who come out of the Protestant tradition identify themselves simply as "Christian", or "born-again Christian"; they typically distance themselves from the confessionalism and/or creedalism of other Christian communities by calling themselves "non-denominational" — often founded by individual pastors, they have little affiliation with historic denominations.

Restorationism

Restorationism is composed of various unrelated churches that believe they are restoring the original church of Jesus Christ and not reforming any of the churches existing at the time of their perceived restorations. They teach that the other divisions of Christianity have introduced defects into Christianity, which is known as the Great Apostasy. Some of these are historically connected to early-19th century camp meetings in the Midwest and Upstate New York. American Millennialism and Adventism, which arose from Evangelical Protestantism, produced the Jehovah's Witnesses movement (with 6.6 million members), and, as a reaction specifically to William Miller, Seventh-day Adventists. Additionally, there are the following groups: Christadelphians, Churches of Christ with 2.6 million members, Disciples of Christ with 800,000 members, and The Church of Jesus Christ of Latter-day Saints, the largest denomination of the Latter Day Saint movement with over 13 million members. Though Restorationists have some superficial similarities, their doctrine and practices vary significantly.

Mainstream Christianity is widely used to refer collectively to the common views of major denominations of Christianity (such as Roman Catholicism, Protestantism, Anglicanism, Orthodox Christianity) as against the particular tenets of other sects or Christian denomination. The context is dependent on the particular issues addressed, but usually contrasts the orthodox majority view against heterodox minority views of groups like Restorationists. In the most common sense, "mainstream" refers to Nicene Christianity, or rather the traditions which continue to claim adherence to the Nicene Creed.

Ecumenism

Most churches have long expressed ideals of being reconciled with each other, and in the 20th century Christian ecumenism advanced in two ways. One way was greater cooperation between groups, such as the Edinburgh Missionary Conference of Protestants in 1910, the Justice, Peace and Creation Commission of the World Council of Churches founded in 1948 by Protestant and Orthodox churches, and similar national councils like the National Council of Churches in Australia which includes Roman Catholics.

The other way was institutional union with new United and uniting churches. Congregationalist, Methodist, and Presbyterian churches united in 1925 to form the United Church of Canada, and in 1977 to form the Uniting Church in Australia. The Church of South India was formed in 1947 by the union of Anglican, Methodist, Congregationalist, Presbyterian, and Reformed churches.

Steps towards reconciliation on a global level were taken in 1965 by the Roman Catholic and Orthodox churches mutually revoking the excommunications that marked their Great Schism in 1054; the Anglican Roman Catholic International Commission (ARCIC) working towards full communion between those churches since 1970; and the Lutheran and Roman Catholic churches signing The Joint Declaration on the Doctrine of Justification in 1999 to address conflicts at the root of the Protestant Reformation. In 2006 the Methodist church adopted the declaration.

See also

Template:Christianityportal

• Freedom of religion
• Criticism of Christianity
• Good news (Christianity), concerning the gospel message of Christianity

Notes

1. Christianity's status as monotheistic is affirmed in, amongst other sources, the Catholic Encyclopedia (article "Monotheism"); William F. Albright, From the Stone Age to Christianity; H. Richard Niebuhr; About.com, Monotheistic Religion resources; Kirsch, God Against the Gods; Woodhead, An Introduction to Christianity; The Columbia Electronic Encyclopedia Monotheism; The New Dictionary of Cultural Literacy, monotheism; New Dictionary of Theology, Paul, p. 496-499; Meconi. "Pagan Monotheism in Late Antiquity". p. 111f.
2. BBC, BBC - Religion & Ethics - 566, Christianity
3. ^ The term "Christian" (Greek Template:Polytonic) was first used in reference to Jesus's disciples in the city of Antioch Acts 11:26 about 44 AD, meaning "followers of Christ". The earliest recorded use of the term "Christianity" (Greek Template:Polytonic) was by Ignatius of Antioch, around 100 AD. See Elwell/Comfort. Tyndale Bible Dictionary, p. 266, 828
4. The specification of Jesus as 'begotten' son is used to indicate the belief that Jesus is the Son of God by nature, as part of the Trinity, rather than by adoption, as Christians believe all true believers are. See Voting About God in Early Church Councils by Ramsay MacMullen, Yale University Press, 2006
5. See: Arianism
6. ^ McGrath, Christianity: An Introduction, p. 4-6.
7. J.Z.Smith, p. 276.
8. Anidjar, p. 3.
9. Fowler, World Religions: An Introduction for Students, p. 131.
10. ^ Robinson, Essential Judaism: A Complete Guide to Beliefs, Customs and Rituals, p. 229.
11. ^ Esler. The Early Christian World. p. 157f.
12. McManners, Oxford Illustrated History of Christianity, p. 301-303.
13. ^ Orlandis, A Short History of the Catholic Church (1993), preface.
14. "between 1,250 and 1,750 million adherents, depending on the criteria employed" (McGrath, Christianity: An Introduction, page xvl.)
15. "1.5 thousand million Christians" (Hinnells, The Routledge Companion to the Study of Religion, p. 441.)
16. Major Religions Ranked by Size
17. Hinnells, The Routledge Companion to the Study of Religion, p. 441.
18. Olson, The Mosaic of Christian Belief.
19. Pelikan/Hotchkiss, Creeds and Confessions of Faith in the Christian Tradition.
20. Catholics United for the Faith, "We Believe in One God"
21. Encyclopedia of Religion, "Arianism".
22. Catholic Encyclopedia, "Council of Ephesus".
23. Christian History Institute, First Meeting of the Council of Chalcedon.
24. British Orthodox Church, The Oriental Orthodox Rejection of Chalcedon
25. Pope Leo I, Letter to Flavian
26. Catholic Encyclopedia, "Athanasian Creed".
27. ^ "Our Common Heritage as Christians". The United Methodist Church. Retrieved 2007-12-31.
28. White, The History of the Church.
29. Metzger/Coogan, Oxford Companion to the Bible, p. 513, 649.
30. Acts 2:24, 2:31–32, 3:15, 3:26, 4:10, 5:30, 10:40–41, 13:30, 13:34, 13:37, 17:30–31, Romans 10:9, 1 Cor 15:15, 6:14, 2 Cor 4:14, Gal 1:1, Eph 1:20, Col 2:12, 1 Thess 1:10, Heb 13:20, 1 Pet 1:3, 1:21
31. http://en.wikisource.org/Nicene_Creed
32. Acts 1:9–11
33. Hanegraaff. Resurrection: The Capstone in the Arch of Christianity.
34. "The Significance of the Death and Resurrection of Jesus for the Christian". Australian Catholic University National. Retrieved 2007-05-16.
35. "Why is the resurrection of Jesus Christ important?". Got Questions Ministries. Retrieved 2007-05-16.
36. John 19:30–31, Mark 16:1, Mark 16:6
37. 1 Cor. 15:6
38. John 3:16, 5:24, 6:39–40, 6:47, 10:10, 11:25–26, and 17:3.
39. This is drawn from a number of sources, especially the early Creeds, the Catechism of the Catholic Church, certain theological works, and various Confessions drafted during the Reformation including the Thirty Nine Articles of the Church of England, works contained in the Book of Concord.
40. Fuller, The Foundations of New Testament Christology, p. 11.
41. A Jesus Seminar conclusion: "in the view of the Seminar, he did not rise bodily from the dead; the resurrection is based instead on visionary experiences of Peter, Paul, and Mary."
42. Funk. The Acts of Jesus: What Did Jesus Really Do?.
43. Lorenzen. Resurrection, Discipleship, Justice: Affirming the Resurrection Jesus Christ Today, p. 13.
44. 1 Cor. 15:14
45. Ball/Johnsson (ed.). The Essential Jesus.
46. Melbourne Unitarian Peace Memorial Church
47. ^ McKim, Donald K. Westminster Dictionary of Theological Terms." Westminster John Knox Press, 1996.
48. CCC 846; Vatican II, Lumen Gentium 14
49. "Salvation outside the Church." http://www.catholic.com/library/Salvation_Outside_the_Church.asp
50. See quotations from Council of Trent on Justification at http://www.justforcatholics.org/a14.htm
51. The American Heritage Dictionary of the English Language, "Soteriology".
52. Metzger/Coogan, Oxford Companion to the Bible, p. 405.
53. Catechism of the Catholic Church, Grace and Justification
54. Westminster Confession, Chapter X; Spurgeon, A Defense of Calvinism.
55. Balge, Martin Luther, Augustinian.
56. Kelly. Early Christian Doctrines. p. 87-90.
57. Alexander. New Dictionary of Biblical Theology. p. 514f.
58. McGrath. Historical Theology. p. 61.
59. Metzger/Coogan. Oxford Companion to the Bible. p. 782.
60. Kelly. The Athanasian Creed.
61. Fowler. World Religions: An Introduction for Students. p. 58.
62. Vladimir Lossky; Loraine Boettner.
63. Theophilus of Antioch Apologia ad Autolycum II 15
64. McManners, Oxford Illustrated History of Christianity. p. 50.
65. Tertullian De Pudicitia chapter 21
66. McManners, Oxford Illustrated History of Christianity, p. 53.
67. Moltman, Jurgen. The Trinity and the Kingdom: The Doctrine of God. Tr. from German. Fortress Press, 1993. ISBN 080062825X
68. Harnack, History of Dogma.
69. Catechism of the Catholic Church, Inspiration and Truth of Sacred Scripture (§105-108)
70. Second Helvetic Confession, Of the Holy Scripture Being the True Word of God
71. Chicago Statement on Biblical Inerrancy, online text
72. PC(USA) - Presbyterian 101 - What is The Bible?
73. Bruce, The Canon of Scripture; Catechism of the Catholic Church, "The Canon of Scripture", § 120
74. Metzger/Coogan, Oxford Companion to the Bible. p. 39.
75. Kelly. Early Christian Doctrines. p. 69-78.
76. Catechism of the Catholic Church, The Holy Spirit, Interpreter of Scripture § 115-118.
77. corinthians 10:2 1_Corinthians 10:2
78. Thomas Aquinas, "Whether in Holy Scripture a word may have several senses"
79. Catechism of the Catholic Church, §116
80. Second Vatican Council, Dei Verbum (V.19).
81. Catechism of the Catholic Church, "The Holy Spirit, Interpreter of Scripture" § 113.
82. Catechism of the Catholic Church, "The Interpretation of the Heritage of Faith" § 85.
83. Mathison. The Shape of Sola Scriptura.
84. ^ Foutz, Martin Luther and Scripture.
85. John Calvin, Commentaries on the Catholic Epistles 2 Peter 3:14-18
86. http://mb-soft.com/believe/txh/helvconf.htm Article about Helvetic confessions
87. Second Helvetic Confession, Of Interpreting the Holy Scriptures; and of Fathers, Councils, and Traditions
88. Sproul. Knowing Scripture, p. 45-61; Bahnsen, A Reformed Confession Regarding Hermeneutics (article 6).
89. Elwell, Walter A. (1984). Evangelical Dictionary of Theology. Grand Rapids, Mich.: Baker Book House. ISBN 0801034132.
90. Johnson, Elliott. Expository hermeneutics : an introduction. Grand Rapids Mich.: Academie Books. ISBN 9780310341604.
91. Terry, Milton (1974). Biblical hermeneutics : a treatise on the interpretation of the Old and New Testaments. Grand Rapids Mich.: Zondervan Pub. House. page 205
92. Elwell, Walter A. (1984). Evangelical Dictionary of Theology. Grand Rapids, Mich.: Baker Book House. ISBN 0801034132. p. 565
93. E.g., in his commentary on Matthew 1 (§III.3) Matthew Henry interprets the twin-sons of Judah, Phares and Zara, as an allegory of the Gentile and Jewish Christians. For a contemporary treatment, see Glenny, Typology: A Summary Of The Present Evangelical Discussion.
94. Catholic Encyclopedia, "Particular Judgment".
95. Ott, Grundriß der Dogmatik, p. 566.
96. David Moser, What the Orthodox believe concerning prayer for the dead.
97. Ken Collins, What Happens to Me When I Die?.
98. Audience of 4 August 1999
99. Catholic Encyclopedia, "The Communion of Saints".
100. Spitz. The Protestant Reformation.
101. Thomas Aquinas, Summa Theologicum, Supplementum Tertiae Partis questions 69 through 99
102. Calvin, John. "Institutes of the Christian Religion, Book Three, Ch. 25". www.reformed.org. Retrieved 2008-01-01. {{cite web}}: Cite has empty unknown parameter: |coauthors= (help)
103. Farrar. Mercy and Judgment, p. 378-382.
104. Talbott. Three Pictures of God in Western Theology, p. 13-15.
105. http://www.auburn.edu/~allenkc/chr-univ.html, retrieved 11 April 2009
106. ^ Justin Martyr, First Apology §LXVII
107. ^ Cross/Livingstone. The Oxford Dictionary of the Christian Church. p. 1435f.
108. Hickman. Handbook of the Christian Year.
109. ANF04. Fathers of the Third Century: Tertullian, Part Fourth; Minucius Felix; Commodian; Origen, Parts First and Second | Christian Classics Ethereal Library
110. Minucius Felix speaks of the cross of Jesus in its familiar form, likening it to objects with a crossbeam or to a man with arms outstretched in prayer (Octavius of Minucius Felix, chapter XXIX).
111. "At every forward step and movement, at every going in and out, when we put on our clothes and shoes, when we bathe, when we sit at table, when we light the lamps, on couch, on seat, in all the ordinary actions of daily life, we trace upon the forehead the sign." (Tertullian, De Corona, chapter 3)
112. ^ Dilasser. The Symbols of the Church.
113. ^ Catholic Encyclopedia, "Symbolism of the Fish".
114. Catholic Encyclopedia, "Veneration of Images.
115. Acts 7:59
116. Acts 12:2
117. Theodosian Code XVI.i.2, in: Bettenson. Documents of the Christian Church. p. 31.
118. McManners, Oxford Illustrated History of Christianity, p. 37f.
119. ^ Gonzalez, The Story of Christianity, p. 238-242.
120. Gonzalez, The Story of Christianity, p. 248-250.
121. Gonzalez, The Story of Christianity, p. 244-247.
122. Gonzalez, The Story of Christianity, p. 260.
123. Gonzalez, The Story of Christianity, p. 278-281.
124. Gonzalez, The Story of Christianity, p. 305, 312, 314f..
125. Gonzalez, The Story of Christianity, p. 303-307, 310f., 384-386.
126. Gonzalez, The Story of Christianity, p. 305, 310f., 316f.
127. Gonzalez, The Story of Christianity, p. 321-323, 365f.
128. Gonzalez, The Story of Christianity, p. 292-300.
129. Riley-Smith. The Oxford History of the Crusades.
130. "The Great Schism: The Estrangement of Eastern and Western Christendom". Orthodox Information Centre. Retrieved 2007-05-26.
131. Duffy, Saints and Sinners (1997), p. 91
132. Gonzalez, The Story of Christianity, p. 300, 304-305.
133. Gonzalez, The Story of Christianity, p. 310, 383, 385, 391.
134. Simon. Great Ages of Man: The Reformation. p. 7.
135. Simon. Great Ages of Man: The Reformation. p. 39, 55-61.
136. Schama. A History of Britain. p. 306-310.
137. Bokenkotter, A Concise History of the Catholic Church, p. 242-244.
138. Simon. Great Ages of Man: The Reformation. p. 109-120.
139. A general overview about the English discussion is given in Coffey, Persecution and Toleration in Protestant England 1558-1689.
140. Mortimer Chambers, The Western Experience (vol. 2) chapter 21.
141. ^ Adherents.com– Number of Christians in the world
142. "Major Religions Ranked by Size". Adherents. Retrieved 2007-12-31.
143. Ustorf. "A missiological postscript", p. 219f.
144. Encyclopedia Britannica table of religions, by region; retrieved November 2007
145. New UK opinion poll shows continuing collapse of 'Christendom'
146. Barrett/Kurian.World Christian Encyclopedia, p. 139 (Britain), 281 (France), 299 (Germany).
147. BBC NEWS - Guide: Christians in the Middle East
148. Is Christianity dying in the birthplace of Jesus?
149. Number of Christians among young Koreans decreases by 5% per year
150. Christianity fading in Taiwan | American Buddhist Net
151. A Gambling-Fueled Boom Adds to a Church’s Bane
152. Putnam, Democracies in Flux: The Evolution of Social Capital in Contemporary Society, p. 408.
153. McGrath, Christianity: An Introduction, p. xvi.
154. Peter Marber, Money Changes Everything: How Global Prosperity Is Reshaping Our Needs, Values and Lifestyles, p. 99.
155. Sydney E. Ahlstrom (, p. 381.) characterized denominationalism in America as "a virtual ecclesiology" that "first of all repudiates the insistences of the Roman Catholic church, the churches of the 'magisterial' Reformation, and of most sects that they alone are the true Church." For specific citations, on the Roman Catholic Church see the Catechism of the Catholic Church §816; other examples: Donald Nash, Why the Churches of Christ are not a Denomination; Wendell Winkler, Christ's Church is not a Denomination; and David E. Pratt, What does God think about many Christian denominations?
156. "Divisions of Christianity". North Virginia College. Retrieved 2007-12-31.
157. "The LDS Restorationist movement, including Mormon denominations". Religious Tolerance. Retrieved 2007-12-31. {{cite web}}: line feed character in |title= at position 33 (help)
158. Second Vatican Council, Lumen Gentium.
159. Duffy, Saints and Sinners, p. 1.
160. Hitchcock, Geography of Religion, p. 281.
161. Norman, The Roman Catholic Church an Illustrated History, p. 11, 14.
162. ^ Second Vatican Council, Lumen Gentium, chapter 2, paragraph 15.
163. Catechism of the Catholic Church, paragraph 865.
164. Marthaler, Introducing the Catechism of the Catholic Church, Traditional Themes and Contemporary Issues (1994), preface.
165. John Paul II, Pope (1997). "Laetamur Magnopere". Vatican. Retrieved 2008-03-09.
166. Annuario Pontificio (2007), p. 1172.
167. Barry, One Faith, One Lord (2001), p. 71
168. ^ Adherents.com, Religions by Adherents
169. Zenit.org, "Number of Catholics and Priests Rises", 12 February 2007.
170. Central Intelligence Agency, (2007).
171. According to the Bonn Accord of 1931, cited at Old Catholic Church of the Beatitudes.
172. Council of Anglican Episcopal Churches in Germany.
173. Cross/Livingstone. The Oxford Dictionary of the Christian Church, p. 1199.
174. ^ McManners, Oxford Illustrated History of Christianity. p. 251-259.
175. "About The Methodist Church". Methodist Central Hall Westminster. Retrieved 2007-12-31.
176. ^ "American Holiness Movement". Finding Your Way, Inc. Retrieved 2007-12-31.
177. "Christianity: Pentecostal Churches". Finding Your Way, Inc. Retrieved 2007-12-31.
178. "Statement of Belief". Cambridge Christ United Methodist Church. Retrieved 2007-12-31.
179. "The New Birth by John Wesley (Sermon 45)". The United Methodist Church GBGM. Retrieved 2007-12-31.
180. "God's Preparing, Accepting, and Sustaining Grace". The United Methodist Church GBGM. Retrieved 2007-12-31.
181. "Total Experience of the Spirtit". Warren Wilson College. Retrieved 2007-12-31.
182. Sykes/Booty/Knight. The Study of Anglicanism, p. 219.
183. Gregory Hallam, Orthodoxy and Ecumenism.
184. Gregory Mathewes-Green, "Whither the Branch Theory?", Anglican Orthodox Pilgrim Vol. 2, No. 4.
185. Confessionalism is a term employed by historians to describe "the creation of fixed identities and systems of beliefs for separate churches which had previously been more fluid in their self-understanding, and which had not begun by seeking separate identities for themselves — they had wanted to be truly Catholic and reformed." (MacCulloch, The Reformation: A History, p. xxiv.)
186. McManners, Oxford Illustrated History of Christianity, p. 91f.
187. "The Restorationist Movements". Religious Tolerance. Retrieved 2007-12-31.
188. "What is Restorationism?". Got Questions Ministries. Retrieved 2007-12-31.
189. JW-Media.org Membership 2005
190. Statistical Report: Annual Council of the General Conference Committee Silver Spring, Marlyand, 6 October—11, 2006
191. "Nicene Creed". Encyclopædia Britannica Online. Encyclopædia Britannica. 2007. Retrieved 2007-12-31. {{cite web}}: Cite has empty unknown parameter: |coauthors= (help)
192. ^ McManners, Oxford Illustrated History of Christianity, p. 581-584.
193. McManners, Oxford Illustrated History of Christianity. p. 413f.
194. McManners, Oxford Illustrated History of Christianity, p. 498.
195. McManners, Oxford Illustrated History of Christianity, p. 373.
196. McManners, Oxford Illustrated History of Christianity, p. 583.
197. Methodist Statement

References

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