Arius the Libyan

Arius is notable primarily because of his role in the Arian controversy, a great fourth-century theological conflict that rocked the Christian world and led to the calling of the first ecumenical council of the Church. This controversy centered upon the nature of the Son of God, and his precise relationship to God the Father. Leading up to the council of Nicaea, the Christian world had many different competing Christological formulae.[13][14] After Nicaea, the dominant orthodox worked to conceal the earlier disagreement, portraying "Arianism" as a radical disagreement to the "norm". The Nicaean formula was a rapidly concluded solution to the general Christological debate that did not have prior agreement.