2025 marks the 1700th anniversary of the First Council of Nicaea. The year will be ripe with commemorating events and programming from churches and ecumenical partners around the globe. For a sneak preview of some of the many opportunities ahead, see below.

• Week of Prayer for Christian Unity 2025, Jan. 18-25. This year’s theme is “Do you believe this?” (John 11:26) and will focus on the Nicaea anniversary. To download resources, click here.
• For programming sponsored by the World Council of Churches, visit their “Nicaea 2025” hub.
• The Cathedral of St. John the Divine will host an Evensong celebrating the 1700th anniversary of the Council of Nicaea on Jan. 19, 2025.
• “Patriarch says pope will visit Turkey in 2025 to mark Nicaea anniversary” (Stay tuned for more.)
• Call for Papers! Ecclesiological Investigations: Thessaloniki 2025
• National Council of Churches – “Christ is Risen: A Transforming Witness from Generation to Generation” (More details to come.)
  • May 13 – 15, 2025: Theological Symposium and Spring Governing Board Meeting, Washington, D.C.
  • June 10 – 12, 2025: Impact Week, New York City
  • October 13 – 17, 2025: 75th Anniversary Celebration and Governing Board Meeting, Boston, Massachusetts