Why he seems to be giving what is good into the hand of a wicked man, when he says, "And unto thee shall be his desire?" (Genesis 4:8).
He does not deliver good into his hand; but the expression is heard with different feelings; since he is speaking, not of a pious man, but after the action is accomplished, saying of him: The desire and respect of the impiety of this man's wickedness will be towards you. Do not therefore talk about necessity, but about your own habits, in order that thus he may represent the voluntary action. And again, the sentence, "And you shall be his ruler over him," has a reference to the operation. In the first place, you begin to act with wickedness; and now behold, another iniquity follows that great and injurious iniquity. Therefore, he both thinks and affirms that this is the principal part of all voluntary injury.