In that place, in A.D. 325, a united Church laid the doctrinal foundations for believers in every age to follow.

A service marking the 1700th anniversary of the Council of Nicaea will be held Oct. 6 at the Cathedral Basilica of Saints ...

Ecumenical Patriarch Bartholomew I led a liturgy in Istanbul on Sunday, marking the 1,700th anniversary of Christianity's first ecumenical council. The first Council of Nicaea (located in modern ...

Pope Leo XIV pledged to work to “pursue the path of unity and fraternal charity” in a meeting in Castel Gandolfo with ...

In what would be the first foreign trip of his papacy, Pope Leo hopes to travel to Türkiye later this year for the 1,700th ...

The Council of Nicaea in 325, whose 1,700th anniversary the global Church is now marking, was a pivotal moment in Christian history. It was the first ecumenical council, and it addressed a fundamental ...