Here is the fullest available narrative history of the reigns of Diocletian and Constantine, and a new assessment of the part Christianity played in the Roman w

Eusebius' Life of Constantine is the most important single record of Constantine, the emperor who turned the Roman Empire from prosecuting the Church to support

The emperor Constantine changed the world by making the Roman Empire Christian. Eusebius wrote his life and preserved his letters so that his policy would conti

Eusebius's account is the only surviving historical record of the Church during its crucial first 300 years. Bishop Eusebius, a learned scholar who lived most o