Christianity is the world's largest religion, with 2.8 billion adherents. It is categorized as one of the three Abrahamic or monotheistic religions of the Western tradition along with Judaism and Islam. 'Christian' is derived from the Greek christos for the Hebrew messiah ("anointed one"). Christianoi, "followers of the Christ," became the name of a group who followed the teachings of Jesus of Nazareth in 1st-century Israel and proclaimed him the predicted messiah of the prophets.
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Timeline
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c. 73 BCE - 4 BCELife of Herod the Great, king of Judea.
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c. 6 BCE - c. 30 CELife of Jesus Christ.
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26 CE - 36 CEJesus of Nazareth is crucified during the reign of Pontius Pilate in Judea.
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c. 36 CE - c. 40 CECall of Paul, the apostle.
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42 CE - 62 CEPaul the Apostle goes on missionary journeys across Asia Minor, Greece, and Rome.
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c. 49 CEPaul the Apostle visits Philippi in Macedon.
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c. 50 CE - c. 70 CEThe early Christian document the Didache is composed.
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c. 50 CE - c. 60 CEEstablishment of various Christian communities in the Eastern Mediterranean, Greece, Egypt, and at least the city of Rome.
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c. 50 CE - c. 60 CELetters of Paul.
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60 CEAn early Christian community is established at Gortyn, Crete.
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64 CEUnofficial persecution of Christians in Rome.
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64 CEThe great fire in Rome.
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c. 65 CE - c. 100 CEThe tales of the life and work of Jesus (gospels) composed.
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66 CE - 73 CEThe Jewish Revolt against Rome.
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c. 69 CE - c. 70 CEThe Gospel of Mark.
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70 CEThe city of Jerusalem is besieged and captured by Rome; the Second Temple destroyed.
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c. 85 CEThe Gospel of Matthew.
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c. 95 CEThe Gospel of Luke and Acts of the Apostles.
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202 CEThe earliest record of a Christian church at Edessa.
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c. 239 CE - c. 330 CELife of Saint Gregory the Illuminator who is credited with bringing Christianity to Armenia (dates disputed).
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249 CE10 Christians are famously martyred at Gortyn in a wild animal hunt.
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c. 300 CE - c. 350 CEChristian Basilica built at Nemea.
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c. 300 CE - c. 400 CEChristianization of Lutetia.
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23 Feb 303 CERoman Emperor Diocletian orders the church at Nicomedia razed to the ground, all documents held there burned, and anything of value seized, beginning eight years of the Great Persecution (Diocletianic Persecution) of Christians in the Roman Empire.
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312 CERoman emperor Constantine I tolerates Christianity.
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28 Oct 312 CEThe Battle of the Milvian Bridge is fought between emperors Constantine I and Maxentius for control of the Roman Empire, ending in a victory for Constantine I who, in gratitude for a vision of victory he claimed to have received from God the night before, ends the persecution of Christians and, eventually, paves the way for Christianity to become the state religion.
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c. 314 CEArmenia adopts Christianity as the state religion.
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7 Mar 321 CERoman Emperor Constantine I declares "The Venerable Day of the Sun" a day of rest, thereby establishing Sunday and the tradition of not working on the first day of the week.
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c. 330 CE - c. 379 CELife of Basil Great, one of the founding fathers of the Eastern Christian Church and Byzantine Monasteries.
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19 Feb 356 CERoman Emperor Constantius II issues his decree ordering the closure of all pagan temples in the Roman Empire and prohibiting pagan rites associated with the former state religion of Rome. Contrary to popular opinion, this decree did not result in the immediate closure of pagan sites which took some time to go into effect.
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391 CEEmperor Theodosius I closes pagan temples.
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c. 397 CESaint Ninian brings Christianity to Scotland, rise of literacy and written history.
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1 Jan 404 CEChristian Roman Emperor Honorius bans gladiatorial games after Saint Telemachus is stoned to death in an amphitheater when he tries to break up a fight between gladiators. Honorius' ban ends the traditional games in the Roman Empire.
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c. 418 CECompletion of Orosius' famous work Seven Books of History Against the Pagans.
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8 Oct 451 CE - 1 Nov 451 CEFourth Ecumenical Council takes place in Chalcedon, determining that Jesus Christ had two distinct natures and wills, perfectly united.
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500 CEAmphipolis becomes an important Christian centre and has four basilicas.
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503 CEClovis I converts to Christianity.
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506 CEFirst Council of Dvin establishes that the Armenian Church did not recognize the Fourth Ecumenical Council.
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532 CE - 537 CEHagia Sophia is built anew in Constantinople.
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608 CEThe Pantheon in Rome is converted into a Christian church.
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691 CE - 692 CEByzantine emperor Justinian II convenes the Council in Trullo to decide on rules for Christians.
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862 CECouncil of Sirakawan between the Armenian and Byzantine Orthodox Churches discuss Christological issues in an effort to reunify, although ultimately unsuccessful.
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2 Jan 1492 CEThe Spanish Reconquista, a 770-year military effort by Christian monarchs in Spain to drive out the Muslim Moors, ends with a Christian victory at the fall of Granada. The Moors are forced to leave Spain or convert to Christianity.
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5 Feb 1597 CEThe 26 Martyrs of Japan are executed by crucifixion under the decree of Chancellor Toyotomi Hideyoshi to deter the spread of Christianity which he felt would undermine Japanese culture. The 26 were Catholic missionaries and laypeople who were tied to crosses and killed with spears. They were canonized by the Church in 1862.
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17 Oct 1850 CEThe Massacre of Aleppo begins as Muslim rioters in Aleppo, Syria, begin killing Christians in the city, destroying or damaging homes and churches and leading to the deaths of 5,000 Christians by the time order was restored in November.