The patriarch whose Christology defeated Nestorianism at the Council of Ephesus and whose commentary on John defends the eternal divinity of the Word.
Cyril was born about 376 to a notable Alexandrian family and trained from his youth in Scripture and the writings of Athanasius, his predecessor by two generations on the throne of St. Mark. As a young man he spent five years among the monks of the Egyptian desert before returning to the city to assist his uncle, the patriarch Theophilus.
He succeeded Theophilus in 412 and would govern the Church of Alexandria for thirty-two years. His earliest works are exegetical: a long commentary on John, a parallel commentary on Luke, a treatise on the Trinity in dialogue form. He read every line of Scripture against the question that mattered to him most: who is Christ?
In 428 Nestorius, archbishop of Constantinople, denied that the Virgin Mary should be called Theotokos, the God-bearer, on the grounds that Christ had two persons. Cyril answered with twelve anathemas and rallied the Church. At the Third Ecumenical Council at Ephesus in 431, the title Theotokos was vindicated and Nestorius was deposed.
Cyril spent his last years defending and refining the Christology that the Council had received, and is honored to this day as the Seal of the Fathers for the precision and authority of his teaching. He reposed in Alexandria on June 27, 444.
And it is with reference to this notion of a union without confusion that we proclaim the holy Virgin to be the mother of God, because God the Word was made flesh and became man, and by the act of conception united to Himself the temple that He received from her.Events during this saint's life
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Holy St. Cyril of Alexandria, pray to God for us.