On the day of 13 January
Of Saint Hilary, bishop and doctor of the Church, who, having been elevated to the See of Poitiers in Aquitania, in his writings fought vigorously under the emperor Constantius, a follower of the Arian heresy, on behalf of Nicene faith concerning the Trinity and the divinity of Christ, on account of which he was banished to Phrygia for four years. He also composed a celebrated commentary on the Psalms as well as on the Gospel of Matthew.
