event
First Council of Nicaea
Constantine summoned 318 bishops to settle the Arian crisis over whether the Son was created or eternal. The Council confessed Christ as homoousios — of one substance with the Father — producing the creed the global church still recites.
Cite this entry
“First Council of Nicaea.” Atlas. Accessed 2026. https://fcbh-atlas.vercel.app/en/event/council-of-nicaea