The ancient traditions regarding Philip's Christianity can be divided into three categories: the Eusebian, or Caesarean; the Antiochene; and the Latin. The Eusebian tradition consists of Eusebius, bishop of Caesarea's Historia Ecclesiastica and the documents excerpted and cited therein, including the letters of Origen and Dionysius, bishop of Alexandria. The Antiochene tradition consists of the John Chrysostom's homily de S. Babyla and Leontius, bishop of Antioch's entries in the Chronicon Paschale. Most scholars hold that these accounts ultimately derive from Eusebius of Caesarea's Historia Ecclesiastica (Ecclesiastical History), but some, like Irfan Shahîd, posit that Antioch had an independent oral tradition.
