The Apostolic Age

The Apostolic Age is the period of the Twelve Apostles, dating from the Crucifixion of Jesus until the death of John the Apostle in Anatolia (~115 A.D.). 

The period between the death of John the Apostle and the First Council of Nicaea (325 A.D.) is known as the Ante-Nicene (“before Nicaea”) or Post-Apostolic period.  Christianity during this time was extremely diverse, with many developments difficult to trace and follow due to a paucity of available material.