In May 325, 300 bishops responded to the summons of the Roman emperor Constantine, gathering at Nicaea, in present-day Turkey, to discuss pressing theological controversies then dividing the church.

One of the most famous stories about the Council of Nicaea is the legend that St. Nicholas slapped the heretic Arius in the face for his impudence and heretical teaching. Whether this event actually ...

Boethius was a Christian in ancient Rome and a polymath, which means he studied lots of things. He adhered to Arian Christianity, considered orthodoxy in some parts of the world and heresy in other ...

Pope Francis looks at a statue of Mary, the Mother of God, and the child Jesus in King Baudouin Stadium in Brussels, Belgium on Sep. 29, 2024. (Credit: Omar Havana/AP.) Listen Pope Francis’s homily on ...