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St. Cyril of Alexandria
St. Cyril of Alexandria (c. 376–444). Born around 376 in Alexandria, Egypt, likely in Theadelphia, Cyril was a Christian theologian, bishop, and Doctor of the Church renowned for defending Christ’s divinity. Raised in a devout family—his uncle Theophilus was Alexandria’s patriarch—he studied Scripture and rhetoric, possibly under Didymus the Blind, and was ordained a priest. In 412, succeeding Theophilus as patriarch, he led the influential See of Alexandria, wielding authority in a turbulent era. His preaching, delivered in Greek, clarified Trinitarian and Christological doctrines, notably against Nestorius, whose teachings Cyril opposed at the Council of Ephesus (431), securing the title Theotokos (Mother of God) for Mary and affirming Christ’s unified divine-human nature. Cyril’s extensive writings include On the Unity of Christ, Against Nestorius, and commentaries on John, Luke, and Hebrews, shaping Eastern and Western theology. Earlier, he faced criticism for expelling Jews from Alexandria in 415 amid riots and for his role in the mob killing of philosopher Hypatia, though direct responsibility is debated. A skilled apologist, he refuted Julian the Apostate’s Against the Galileans. Unmarried, as a celibate bishop, he died on June 27, 444, in Alexandria, leaving no family but a vast legacy. Cyril said, “Christ is one person, uniting in Himself the fullness of God and man.”
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St. Cyril of Alexandria preaches on the profound union between Christ and believers, likening it to the relationship between a vine and its branches. He emphasizes the importance of remaining in Christ's love and receiving the Holy Spirit as the bond of union. Through faith and the grace of God, believers are united with Christ, sharing in His nature and becoming one spirit with Him. Just as branches draw nourishment from the vine, Christians draw life from Christ to bear the fruit of a new life founded on faith and love, guided by the Holy Spirit.
I Am the Vine
The Lord calls himself the vine and those united to him branches (John 15:5) in order to teach us how much we shall benefit from our union with him, and how important it is for us to remain in his love. By receiving the Holy Spirit, who is the bond of union between us and Christ our Savior, those who are joined to him, as branches are to a vine, share in his own nature. On the part of those who come to the vine, their union with him depends upon a deliberate act of the will; on his part, the union is effected by grace. Because we had good will, we made the act of faith that brought us to Christ, and received from him the dignity of adoptive sonship that made us his own kinsmen, according to the words of Saint Paul: He who is joined to the Lord is one spirit with him. The prophet Isaiah calls Christ the foundation, because it is upon him that we as living and spiritual stones are built into a holy priesthood to be a dwelling place for God in the Spirit. Upon no other foundation than Christ can this temple be built. Here Christ is teaching the same truth by calling himself the vine, since the vine is the parent of its branches, and provides their nourishment. From Christ and in Christ, we have been reborn through the Spirit in order to bear the fruit of life; not the fruit of our old, sinful life but the fruit of a new life founded upon our faith in him and our love for him. Like branches growing from a vine, we now draw our life from Christ, and we cling to his holy commandment in order to preserve this life. Eager to safeguard the blessing of our noble birth, we are careful not to grieve the Holy Spirit who dwells in us, and who makes us aware of God’s presence in us. Let the wisdom of John teach us how we live in Christ and Christ lives in us: The proof that we are living in him and he is living in us is that he has given us a share in his Spirit. Just as the trunk of the vine gives its own natural properties to each of its branches, so, by bestowing on them the Holy Spirit, the Word of God, the only-begotten Son of the Father, gives Christians a certain kinship with himself and with God the Father because they have been united to him by faith and determination to do his will in all things. He helps them to grow in love and reverence for God, and teaches them to discern right from wrong and to act with integrity.
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St. Cyril of Alexandria (c. 376–444). Born around 376 in Alexandria, Egypt, likely in Theadelphia, Cyril was a Christian theologian, bishop, and Doctor of the Church renowned for defending Christ’s divinity. Raised in a devout family—his uncle Theophilus was Alexandria’s patriarch—he studied Scripture and rhetoric, possibly under Didymus the Blind, and was ordained a priest. In 412, succeeding Theophilus as patriarch, he led the influential See of Alexandria, wielding authority in a turbulent era. His preaching, delivered in Greek, clarified Trinitarian and Christological doctrines, notably against Nestorius, whose teachings Cyril opposed at the Council of Ephesus (431), securing the title Theotokos (Mother of God) for Mary and affirming Christ’s unified divine-human nature. Cyril’s extensive writings include On the Unity of Christ, Against Nestorius, and commentaries on John, Luke, and Hebrews, shaping Eastern and Western theology. Earlier, he faced criticism for expelling Jews from Alexandria in 415 amid riots and for his role in the mob killing of philosopher Hypatia, though direct responsibility is debated. A skilled apologist, he refuted Julian the Apostate’s Against the Galileans. Unmarried, as a celibate bishop, he died on June 27, 444, in Alexandria, leaving no family but a vast legacy. Cyril said, “Christ is one person, uniting in Himself the fullness of God and man.”