History. The First Ecumenical Council of the Church was held in 325 in Nicaea (now Isnik), a city of Bithynia in Asia Minor. In the history of Christianity it was an event of paramount importance; not merely because it was a new expedient adopted to meet and decide ecclesiastical issues of an extraordinary nature, but because of its far-reaching and uncompromising decision in a matter that threatened the very existence of Christianity. The immediate
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