— The Council of Nicea, May-August, A.D. 325
May 20, 325 was a watershed date in the history of the Christian church. The first international Christian council was convoked at Nicea, a city in what is today northwestern Turkey. The council dealt with a number of issues, such as the controversy concerning the date for celebrating Easter. However, the most important reason was to discuss the nature of Jesus Christ. Apostolic writers had not systematically described Jesus Christ’s relationship to the Father in a theological or formal way.