, they also wrongly think that evil has a substantive existence. But they arbitrarily imagine another god besides the true One, the Father of our Lord Jesus Christ, and that he is the unmade producer of evil and the head of wickedness, who is also artificer of Creation. But these men one can easily refute, not only from the divine Scriptures, but also from the human understanding itself, the very source of these their insane imaginations.4. To begin with, our Lord and Saviour Jesus Christ says in His own gospels confirming the words of Moses: "The Lord God is one;" and "I thank thee, Father, Lord of heaven and earth  ." But if God is one, and at the same time Lord of heaven and earth, how could there be another God beside Him? or what room will there be for the God whom they suppose, if the one true God fills all things in the compass of heaven and earth? or how could there be another creator of that, whereof, according to the Saviour's utterance, the God and Father of Christ is Himself Lord.5. Unless indeed they would say that it were, so to speak, in an equipoise, and the evil god capable of getting the better of the good God. But if they say this, see to what a pitch of impiety they descend. For when powers are equal, the superior and better cannot be discovered. For if the one exist even if the other will it not, both are equally strong and equally weak equally, because the very existence of either is a defeat of the other's will: weak, because what happens is counter to their wills: for while the good God exists in spite of the evil one, the evil god exists equally in spite of the good.