the view that the Son who made himself known in Jesus Christ was a divine being who could become a man because, although he was closer to God than anyone else, he was not God himself. He was "divine" in the moral sense of being perfectly good and holy, but he did not possess the characteristics of God that would have prevented him from entering the created world--infinity, eternity, immutability, and so on.God Has Spoken, 232
So, tell me, heretic, was there ever a time when the all-powerful God was not the Father, and yet was God? For if he began to be the Father, then he was first God and afterwards became the Father. But then, how is God unchangeable? For if he was first God and afterwards the Father, surely he has been changed by the addition of begetting. But may God preserve us from this insanity.De fide, bk1, c10 n62