constantine. I. The Life of Constantine. II. The Oration of Constantine. III. The Oration of Eusebius · The Life of the Blessed Emperor Constantine, by Eusebius Pamphilus · Chapter LXIV
Constantine's Letter to Alexander the Bishop, and Arius the Presbyter
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"Victor Constantinus, Maximus Augustus, to Alexander and Arius.
"I call that God to witness, as well I may, who is the helper of my endeavors, and the Preserver of all men, that I had a twofold reason for undertaking that duty which I have now performed.
Nicene and Post-Nicene Fathers, Series II, Volume 1, ed. Philip Schaff and Henry Wace (1890–1900). Public domain. Text from the Christian Classics Ethereal Library.