The Council of Nicaea in 325 was a gathering of Christian bishops in Nicaea, now in present-day Türkiye. It was the first attempt to reach consensus in the church through an assembly representing all of Christendom, and to affirm the Christian faith in the triune God.

For a great introduction watch the World Council of Churches President for Europe Rev Dr Susan Durber speaking at a recent CTE event

Reflections on Nicaea 2025

Nicaea 2025 resources

World Council of Churches
The World Council of Churches is planning a year of activities with member churches, other churches, Christian World Communions, national and regional organizations, and theological and ecumenical institutions. Explore the resources

Front page of the WPCU resources 2025

Week of Prayer for Christian Unity
As we celebrate 1,700 years since the Council of Nicaea, the worship for the Week of Prayer for Christian Unity (WPCU) has at its heart, the Nicene Creed. Reflecting this, the scripture readings for this year focus on belief. Find out more