Leo will commemorate the 1,700th anniversary with Patriarch Bartholomew, the spiritual leader of Eastern Orthodox Christians.

Cardinal Wilton Gregory, archbishop emeritus of Washington, celebrates the Nov. 20 votive Mass honoring Saint Thérèse of ...

At the Council of Nicaea in 325, the Emperor Constantine summoned bishops from around the Roman Empire. The council hashed ...

Some 1,700 years ago, bishops from all over the Roman Empire gathered in what is now Turkey to hash out Christian doctrine.

Centuries of church schisms show that if there’s a doctrine to be fought over, there’s a good chance Christians will fight about it. That repeated splintering is what makes the Council of Nicaea — a ...

New Archbishop James Checchio waves to his mother, Helen, during a Tuesday Mass at St. Louis Cathedral to welcome to him to ...

Once you put people into categorical boxes, you are inviting them to see history as a zero-sum conflict between this group ...