St. Athanasius of Alexandria

Our father among the saints Athanasius of Alexandria (also spelled "Athanasios"; from Greek, "immortal") was a bishop of Alexandria and major theological writer in the fourth century. He is also called Athanasius the Great and (by the Coptic Church) Athanasius the Apostolic. He was born in 298 and died on May 2, 373.

His feast day in the Orthodox Church is January 18.

Source: Athanasius of Alexandria - OrthodoxWiki

• On the Incarnation (St. Athanasius)
• Against the Heathen (Contra Gentiles) (St Athanasius)