History of Early Christianity - Post-apostolic Period

Post-apostolic Period

Christianity throughout the 2nd and 3rd centuries have generally been less studied than the periods that came before and after it. This is reflected in that it is usually referred to in terms of the adjacent periods with names as such "post-apostolic" (after the period of 1st century formative Christianity) and "ante-Nicene" (before the First Council of Nicaea). However, the 2nd and 3rd centuries are quite important in the development of Christianity.

There is a relative lack of material for this period, compared with the later Church Father period. For example, a widely used collection (Ante-Nicene Fathers) includes most 2nd- and 3rd-century writings in nine volumes. This includes the writings of the Apostolic Fathers, Apologists, Clement of Alexandria, Irenaeus of Lyons, Origen of Alexandria and the New Testament Apocrypha, among others. In contrast, Nicene and Post-Nicene Fathers (consisting mainly of Augustine, Jerome and Chrysostom) fills twenty-eight volumes.

The developments of this time are "multidirectional and not easily mapped". While the preceding and following periods were diverse, they possessed unifying characteristics lacking in this period. 1st-century Christianity possessed a basic cohesion based on the Pauline church movement, Jewish character, and self-identification as a messianic movement. The 2nd and 3rd centuries saw a sharp divorce from its early roots. There was an explicit rejection of then-modern Judaism and Jewish culture by the end of the 2nd century, with a growing body of adversus Judaeos literature. 4th- and 5th-century Christianity experienced imperial pressure and developed strong episcopal and unifying structure. The ante-Nicene period was without such authority and was more diverse. Many variations in this time defy neat categorizations, as various forms of Christianity interacted in a complex fashion to form the dynamic character of Christianity in this era.

By the early 2nd century, Christians had agreed on a basic list of writings that would serve as their canon, see Development of the New Testament canon, but interpretations of these works differed, often wildly. In part to ensure a greater consistency in their teachings, by the end of the 1st century many Christian communities evolved a more structured hierarchy, with a central bishop, whose opinion held more weight in that city. By 160, most communities had a bishop, who based his authority on the chain of succession from the apostles to himself.

Bishops still had a freedom of interpretation. The competing versions of Christianity led many bishops who subscribed to what is now the mainstream version of Christianity to rally more closely together. Bishops would call synods to discuss problems or doctrinal differences in certain regions; the first of these to be documented occurred in Roman Asia in about 160. Some bishops began to take on a more authoritative role for a region; in many cases, the bishop of the church located in the capital city of a province became the central authority for all churches in that province. These more centralized authorities were known as metropolitan churches headed by a Metropolitan bishop. The churches in Antioch, Alexandria, and Rome exerted authority over groups of these metropolitan churches.