Ecclesiastical History

About This Book

The Ecclesiastical History by Eusebius of Caesarea (c. 260–340), the Bishop of Caesarea in Palestine, is the first comprehensive narrative history of the Christian Church and one of the most important works of late antiquity. Written and revised between roughly 312 and 324 AD, it covers the period from the apostolic age to the defeat of Licinius by Constantine and the triumph of Christianity as a favored religion of the Roman Empire.

Divided into ten books, the work traces the successions of bishops in the major sees, the rise and suppression of heresies, the persecutions suffered by Christians under various emperors, and the lives and writings of notable Church Fathers. Eusebius preserved extensive quotations from earlier writers whose works are otherwise lost, making the Ecclesiastical History an irreplaceable primary source. He drew on the rich theological library at Caesarea, citing official documents, imperial edicts, martyrdom accounts, and personal letters.

Eusebius is often called the Father of Church History. His narrative method — combining documentary evidence with chronological structure — influenced all subsequent Christian historiography. The work is in the public domain and available in multiple English translations.

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