Creed of the First Council of Nicea (A.D. 325)
Credimus in unum Deum Patrem omnipotentem, omnium visibilium et invisibilium factorem Et in unum Dominum vestrum Iesum Christum, Filium Dei, natum de Patre unigenitum, hoc est de substantia Patris, Deum de Deo, Lumen de lumine, Deum verum de Deo vero, natum non factum, unius substantiae cum Patre, quod graece dicunt homousion, per quem omnia facta sunt, sive quae in caelo sive quae in terra Qui propter nos homines et propter nostram salutem descendit, incarnatus est, homo factus est, passus est, et resurrexit tertia die, ascendit in caelos, venturus iudicare uiuos et mortuos et in Spiritum Sanctum Eos autem qui dicunt: "Erat quando non erat," et "Priusquam nasceretur non erat," et quia "Ex nullis extantibus factus est," vel "Ex alia substantia sive essentia dicentes mutabilem et convertibilem Filium Dei," hos anathematizat catholica et apostolica ecclesia.
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, [the] only begotten of the Father, that is of the substance of the Father, God from God, Light from Light, true God of true God, begotten not made, of one substance with the Father, which in Greek is called homousion, by whom all things were made, both those in heaven and those on earth Who for us men and for our salvation came down and was incarnate, was made man, suffered, and rose the third day, ascended into heaven, and is coming to judge the living and dead And in the Holy Spirit (Note: here follow the anathemas, which is a statement of what is not to be believed, and traditionally is considered a part of the Nicene Creed) Those, however, who say, "there was a time when He was not," and "before He was born he was not," or that "He was made from nothing," or who say "the Son of God is from another substance or essence or is subject to change or alteration," these the Catholic and Apostolic Church anathematizes.