MEMORIAL – JUNE 27
Cyril was born in Egypt at the end of the 4th century. He was ordained a priest by his uncle who was Patriarch of Alexandria, and Cyril succeeded him once his uncle passed away. Cyril played a major role in the fight against the heresy of Nestorianism which claimed that Mary was not the Mother of God, because Nestorius claimed that Christ was only human. He also wrote many treatises on the Trinity and the Incarnation to make clear the teachings of the Church on the natures of Jesus. Before he passed away he also had many more writings such as commentary on the gospels. St. Cyril is a doctor of the Church.