Feast of Saint Irenaeus of Lyons – June 28
Irenaeus of Lyons was one of the great Fathers of the Church in the second century. He was a bishop and greatly influenced the development of Christian theology.
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Irenaeus was born in Asia Minor and was a disciple of Policarp, one of the renowned Christian teachers, who died a martyr's death. He wrote in Greek and among his important writings are those that defend the Christian faith. Irenaeus was greatly aware of the importance of the writings of Israel and he formulated a theology that united the New Testament with the Old Testament – a unity that is indissoluble. From his perspective, the Old Testament constitutes an immense prophecy pointing to Jesus as the Messiah of Israel and the Son of God.
Saint Irenaeus wrote: "God's glory is in living men and full life for men is in the vision of God" (from Book 4, Against Heresies).


Feast of Saint Peter Claver – September 9
Feast of the Nativity of the Virgin Mary – September 8
Feast of Mother Teresa of Calcutta – September 5
Feast of Moses Giver of the Law – September 4
Feast of Saint Gregory the Great – September 3
Feast of Saint Augustine – August 28