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

Many sacred beliefs of our Catholic faith can be traced to the 21 ecumenical councils held since the fourth century.

Icon depicting the Emperor Constantine and the bishops of the First Council of Nicaea (325) holding the Niceno–Constantinopolitan Creed of 381. (Credit: Wikipedia.) Listen LEICESTER, United ...

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 International Theological Commission has published “Jesus Christ, Son of God, Savior: The 1,700th Anniversary of the Ecumenical Council of Nicaea.” Saturday, Jun 21 2025 News ...

The First Council of Nicaea as depicted by Italian painter Cesare Nebbia (1536-1614), on display at the Vatican Museums, Rome. Photograph by Album/Alamy Stock Photo.

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

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 ...

Leo XIV is expected to visit Nicaea — located in modern-day İznik in northwestern Turkey — to celebrate the 1,700th ...

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 ...

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

A Catholic archbishop in Turkey has termed the commemoration of the 1700 th anniversary of the Ecumenical Council of Nicaea as “an opportunity for ecumenical dialogue and unity.”. Archbishop Martin ...