Saint Athanasius, a Doctor of the Church, and the foremost defender of the divinity of Christ, is one of the key figures in the history of the Faith. His era, the Fourth Century, was a time period of turbulent change, not unlike our own in that respect. With the conversion of the Emperor Constantine to Christ, the Church was suddenly transformed from a proscribed cult into the religion of the Empire. Instead of being executed for their faith in Christ, bishops found themselves important players in what was rapidly becoming a Christian Empire. To many Christians, it seemed as if they had reached a golden period in human history when the Church could rapidly reach its goal of bringing all men to Christ. History, however, never ceases to twist and turn as it charts the affairs of Man.
One of the more dangerous twists of History in the Fourth Century for the Church, was the meteoric rise of the Arian heresy. A priest of Alexandria, Egypt, Arius propounded the doctrine that the Son, since he was begotten of the Father, was a creation of God, and not God. He was the greatest of God’s creations, and next to God, but he was not God. Of course, Arius thus destroyed the doctrine of the Trinity, and reduced Jesus from being God to being a creature serving God. This doctrine, if it had prevailed, would have transformed Christianity into a Unitarian faith and inevitably downplayed the centrality of Christ. The doctrine of Arius began to spread, until it was necessary for it to be addressed at the Council of Nicaea in 325 AD, the first of the ecumenical councils. Called specifically to address Arianism, the Council was unequivocal in its condemnation of Arianism as indicated by the Nicene Creed written at the Council:
We Believe in one God, the Father Almighty, maker of all things visible and invisible; and in one Lord, Jesus Christ, the Son of God, begotten of the Father, only begotten, that is, from the substance of the Father; God from God, Light from Light, very God from very God, begotten, not made, Consubstantial with the Father, by whom all things were made, both things in heaven and things in earth; who for us men and for our salvation came down and was incarnate, was made man, suffered and rose again the third day, ascended into heaven, and is coming to judge the living and the dead. And in the Holy Spirit, and those who say “There was when he was not” and “Before his generation he was not” and “He came to be from nothing” or those who pretend that the Son of God is “Of other hypostasis or substance; or “created” or alterable” or “mutable”; the Catholic and apostolic Church anathematizes.