where did christianity spread during the first 300 years
Early Christianity Early Christianity spread from city to city throughout the Hellenized Roman Empire and beyond into East Africa and South Asia. The Christian Apostles, said to have dispersed from Jerusalem, traveled extensively and established communities in major cities and regions throughout the Empire. Apostles (see Apostolic see) and other Christian soldiers, merchants, and preachers founded early church communities in northern Africa, Asia Minor, Armenia, Caucasian Albania, Arabia, Greece, and other places.[60][61][62][63] Over forty existed by the year 100,[61][62] many in Asia Minor, such as the seven churches of Asia. By the end of the 1st century, Christianity had spread to Greece and Italy, even India.
New Testament Collections of related texts such as letters of the Apostle Paul (a major collection of which must have been made already by the early 2nd century)[3] and the Canonical Gospels of Matthew, Mark, Luke, and John (asserted by Irenaeus of Lyon in the late-2nd century as the Four Gospels) gradually were joined to other collections and single works in different combinations to form various Christian canons of Scripture. Over time, some disputed books, such as the Book of Revelation and the Minor Catholic (General) Epistles were introduced into canons in which they were originally absent. Other works earlier held to be Scripture, such as 1 Clement, the Shepherd of Hermas, and the Diatessaron, were excluded from the New Testament. The Old Testament canon is not completely uniform among all major Christian groups including Roman Catholics, Protestants, the Greek Orthodox Church, the Slavic Orthodox Churches, and the Armenian Orthodox Church. However, the twenty-seven-book canon of the New Testament, at least since Late Antiquity, has been almost universally recognized within Christianity (see Development of the New Testament canon).
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Early centers of Christianity The Apostolic sees claim to have been founded by one or more of the apostles of Jesus, who are said to have dispersed from Jerusalem sometime after the crucifixion of Jesus, c. 26–36, perhaps following the Great Commission. Early Christians gathered in small private homes,[1] known as house churches, but a city's whole Christian community would also be called a church – the Greek noun ἐκκλησία literally means assembly, gathering, or congregation[2][3] but is translated as church in most English translations of the New Testament.