Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos
First Council of Nicaea
References & Edit History Quick Facts & Related Topics
Images
First Council of Nicaea Council of Nicaea Arius
Related Questions
Feedback
Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login).
Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

External Websites
First Council of Nicaea
First Council of Nicaea Council of Nicaea in 325, depicted in a Byzantine fresco in the basilica of St. Nicholas in Demre, Turkey.

First Council of Nicaea

Christianity [325]
Written and fact-checked by
Britannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
Britannica Editors
Last updated
•History

First Council of Nicaea, (325), the first ecumenical council of the Christian church, meeting in ancient Nicaea (now İznik, Turkey). It was called by the emperor Constantine I, an unbaptized catechumen, who presided over the opening session and took part in the discussions. He hoped a general council of the church would solve the problem created in the Eastern church by Arianism, a heresy first proposed by Arius of Alexandria that affirmed that Christ is...

Discover the world with Britannica

Subscribe to Continue Reading

Free Trial | No Ads | Exclusive Content

Unsubscribe Anytime!

Explore Subscriptions
DNA
Right
Mobile