“We believe in one God, the Father All Governing [pantokratora], creator [poieten] of all things visible and invisible;
And in one Lord Jesus Christ, the Son of God, begotten of the Father as only begotten, that is, from the essence [reality] of the Father, [ek tes ousia tou patros], God from God, Light from Light, true God from true God, begotten not created [poiethenta], of the same essence [reality] as the Father [homoousion to patri], through whom all things came into being both in heaven and in earth; Who for us men and for our salvation came down and was incarnate, becoming human [enanthropesanta]. He suffered and the third day he rose, and ascended into the heavens. And he will come to judge both the living and the dead.
And we believe in the Holy Spirit. But, those who say, Once he was not, or he was not before his generation, or he came to be out of nothing, or who assert that he came to be out of nothing, or who assert that he, the Son of God, is of a different hypostasis or ousia, or that he is a creature, or changeable, or mutable, the Catholic and Apostolic Church anathematizes them.”
Leith, John H. Creeds of the Churches: A Reader in Christian Doctrine from the Bible to the Present. Third ed. Atlanta, GA: John Knox Press, 1982.