Church History, Life of Constantine, Oration in Praise of Constantine (Nicene and Post-Nicene Fathers, Series II, Vol. I)

Eusebius of Caesarea; ed. Philip Schaff and Henry Wace

Research & Reports

Gnosticism & Early Christianity Comparative Religion & Mystery Religions

Public domain (19th-century English translation of ancient texts). Eusebius's foundational Church History, a primary source on the early Church's conflicts with Gnostic and other rival sects.

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