Tertullian

“ Now the Scripture is not in danger of requiring the aid of any one’s argument, lest it should seem to be self-contradictory. It has a method of its own, both when it sets forth one only God, and also when it shows that there are Two, Father and Son; and is consistent with itself. It is clear that the Son is mentioned by it. For, without any detriment to the Son, it is quite possible for it to have rightly determined that God is only One, to whom the Son belongs ”

“ He says, then, that there is no God besides Himself in respect of the idolatry both of the Gentiles as well as of Israel; nay, even on account of our heretics also, who fabricate idols with their words, just as the heathen do with their hands; that is to say, they make another God and another Christ. ”