First Council of Nicaea - Arian Controversy

Arian Controversy

The Arian controversy was a Trinitarian dispute that began in Alexandria between the followers of Arius (the Arians) and the followers of St. Alexander of Alexandria (now known as Homoousians). Alexander and his followers believed that the Son was co-eternal with the Father, and divine in just the same sense that the Father is. The Arians believed that the Son shared neither the eternity nor the true divinity of the Father, but was merely the most perfect of the creatures.

For about two months, the two sides argued and debated, with each appealing to Scripture to justify their respective positions. According to many accounts, debate became so heated that at one point, Arius was slapped in the face by Nicholas of Myra, who would later be canonized.

Much of the debate hinged on the difference between being "born" or "created" and being "begotten". Arians saw these as essentially the same; followers of Alexander did not. The exact meaning of many of the words used in the debates at Nicea were still unclear to speakers of other languages. Greek words like "essence" (ousia), "substance" (hypostasis), "nature" (physis), "person" (prosopon) bore a variety of meanings drawn from pre-Christian philosophers, which could not but entail misunderstandings until they were cleared up. The word homoousia, in particular, was initially disliked by many bishops because of its associations with Gnostic heretics (who used it in their theology), and because it had been condemned at the 264–268 Synods of Antioch.