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Study guides, historical commentary, and theological reflection on the Nicene Creed.

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nicene creedCouncil of Nicaea 325 AD — the moment that changed Christianity and defined the Trinity

The Council of Nicaea: Why 325 AD Changed Christianity Forever

In 325 AD, over 300 bishops gathered in a small city in modern-day Turkey and made decisions that still shape how Christians worship, pray, and define their faith today. Here is what happened and why it still matters.

Rev. C•D•F• Warrington, M.Div.

By Rev. C•D•F• Warrington, M.Div.

Ordained Minister, M.Div.

Date

April 4, 2026