Early Christianity, otherwise called the Early Church, describes the historical era of the Christian religion up to the First Council of Nicaea in 325. Christianity spread from the Levant, across the Roman Empire, and beyond. Originally, this progression was closely connected to already established Jewish centers in the Holy Land and the Jewish diaspora throughout the Eastern Mediterranean. The first followers of Christianity were Jews who had converted to the faith, i.e. Jewish Christians, as well as Phoenicians, i.e. Lebanese Christians. Early Christianity contains the Apostolic Age and is followed by, and substantially overlaps with, the Patristic era.
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. 26–33, perhaps following the Great Commission. Early Christians gathered in small private houses, known as house churches, but a city's whole Christian community would also be called a "church"—the Greek noun ἐκκλησία (ekklesia) literally means "assembly", "gathering", or "congregation" but is translated as "church" in most English translations of the New Testament.