Ecclesiastical History

Ecclesiastical History (Greek: Ἐκκλησιαστικὴ ἱστορία; Latin: Historia Ecclesiastica or Historia Ecclesiae) of Eusebius, the bishop of Caesarea was a 4th-century pioneer work giving a chronological account of the development of Early Christianity from the 1st century to the 4th century. It was written in Koine Greek, and survives also in Latin, Syriac and Armenian manuscripts.