St. Athanasius, also called Saint Athanasius of Alexandria. He was the chief defender of Christian orthodoxy in the 4th-century battle against Arianism, the heresy that the Son of God was a creature of like, but not of the same, substance as God the Father. His important works include The Life of St. Antony, On the Incarnation, and Four Orations Against the Arian #churchhistory #biblecanonseries #athanasios #stanthonythegreat #athanasia #churchfathers