Saint of the Day

01 · Read · A life to discover

St. Hilary of Poitiers

Hilary of Poitiers was a fourth-century bishop and theologian who defended the full divinity of Christ. His writings became important to Latin Christianity during the disputes surrounding the Council of Nicaea's teaching.

His own account describes a search for truth that led him to Christianity. A strong literary education equipped him for biblical interpretation, and he became bishop of Poitiers in the middle of the fourth century. His commentary on Matthew is an early surviving Latin treatment of that Gospel.

Opposition to bishops favored by Emperor Constantius led to exile in Phrygia in 356. Distance from his diocese also brought contact with Eastern theological debates. There he worked on On the Trinity, explaining the Son's relationship with the Father through Scripture and the baptismal confession.

After returning to Gaul, Hilary worked to restore Nicene teaching while seeking reconciliation with those open to it. His career therefore involved persuasion as well as polemic. He died in 367 and was declared a Doctor of the Church in 1851. His January 13 remembrance honors a pastor whose forced displacement became an important period of intellectual work.

This saint is included on this recurring date in the U.S. Roman Rite calendar published by the USCCB. This reading guide gives U.S. calendar saints priority; the Mass celebrated on a particular year’s date can differ because of Sundays, seasons or higher-ranking celebrations.