O Concílio de Nicéia

Para os que ficaram irritados com as citações de Rodrigo Constantino que envolviam a Wikipedia, com a qual o rapaz imaginava derrotar o obscurantismo medieval de Olavo, recomendo a Conservapedia, que não apenas tem bons artigos (apesar de ser recente) como mostra o viés equerdista da Enciclopédia Livre. Uma boa síntese do Concílio de Nicéia:

An Ecumenical Council which was convened in 325 AD. It addressed the differing sects of Christianity, especially Arianism. As a result of the council, the Nicene Creed, which codified the theological understanding of the Holy Trinity, was issued. Until the Council of Nicaea, there was dispute within the church over the divinity of Jesus Christ. The Council ultimately decided that Jesus was the Son of God, by one vote.

The Council was presided over by Constantine, who is said to have coined the term homousis, the current language in the Nicene Creed describing Jesus as "of the same substance" as the father. Constantine's influence, though, is largely the stuff of panegyric writers, especially Eusebius of Caesarea, and his real influence is up for historical debate.[1]

The Council of Nicaea also canonized the current Bible and removed all other books of the Bible it deemed heretical, including the Gospel of Thomas and other Gnostic Gospels.