Cyril’s writings – truly numerous and already widely disseminated in various Latin and Eastern translations in his own lifetime, attested to by their instant success – are of the utmost importance for the history of Christianity. His commentaries on many of the New and Old Testament Books are important, including those on the entire Pentateuch, Isaiah, the Psalms and the Gospels of John and Luke. Also important are his many doctrinal works, in which the defence of the Trinitarian faith against the Arian and Nestorian theses recurs. The basis of Cyril’s teaching is the ecclesiastical tradition and in particular, as I mentioned, the writings of Athanasius, his great Predecessor in the See of Alexandria. Among Cyril’s other writings, the books Against Julian deserve mention. They were the last great response to the anti-Christian controversies, probably dictated by the Bishop of Alexandria in the last years of his life to respond to the work Against the Galileans, composed many years earlier in 363 by the Emperor known as the “Apostate” for having abandoned the Christianity in which he was raised.

The Christian faith is first and foremost the encounter with Jesus, “a Person, which gives life a new horizon” (Deus Caritas Est, n. 1). St Cyril of Alexandria was an unflagging, staunch witness of Jesus Christ, the Incarnate Word of God, emphasizing above all his unity, as he repeats in 433 in his first letter (PG 77, 228-237) to Bishop Succensus: “Only one is the Son, only one the Lord Jesus Christ, both before the Incarnation and after the Incarnation. Indeed, the Logos born of God the Father was not one Son and the one born of the Blessed Virgin another; but we believe that the very One who was born before the ages was also born according to the flesh and of a woman”. Over and above its doctrinal meaning, this assertion shows that faith in Jesus the Logos born of the Father is firmly rooted in history because, as St Cyril affirms, this same Jesus came in time with his birth from Mary, the Theotò-kos, and in accordance with his promise will always be with us. And this is important: God is eternal, he is born of a woman, and he stays with us every day. In this trust we live, in this trust we find the way for our life.

Dr. Matthew E. Bunson is a Register senior editor and a senior contributor to EWTN News. For the past 20 years, he has been active in the area of Catholic social communications and education, including writing, editing, and teaching on a variety of topics related to Church history, the papacy, the saints and Catholic culture. He is faculty chair at Catholic Distance University, a senior fellow of the St. Paul Center for Biblical Theology, and the author or co-author of over 50 books including The Encyclopedia of Catholic History, The Pope Encyclopedia, We Have a Pope! Benedict XVI, The Saints Encyclopedia and best-selling biographies of St. Damien of Molokai and St. Kateri Tekakwitha.