Portal:Catholic Church/Selected article/30

The First Council of Nicaea, held in Nicaea in Bithynia (present-day İznik in Turkey), convoked by the Roman Emperor Constantine I in 325, was the first Ecumenical council of the Christian Church, and most significantly resulted in the first uniform Christian doctrine, called the Nicene Creed. With the creation of the creed, a precedent was established for subsequent 'general (ecumenical) councils of Bishops' (Synods) to create statements of belief and canons of doctrinal orthodoxy&mdash; the intent being to define unity of beliefs for the whole of Christendom.The purpose of the council was to resolve disagreements in the Church of Alexandria over the nature of Jesus in relationship to the Father; in particular, whether Jesus was of the same substance as God the Father or merely of similar substance. St. Alexander of Alexandria and Athanasius took the first position; the popular presbyter Arius, from whom the term Arian controversy comes, took the second.

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