Romans 7:15

(9) For that which I do I (10) allow not: for what I (11) would, that do I not; but what I hate, that do I.

(9) He sets himself before us as an example, since he has been regenerated, and in whom may easily appear the strife of the Spirit and the flesh, and therefore of the law of God, and our wickedness. For since the law in a man who has not been regenerated brings forth only death, therefore in him it may easily be accused: but seeing that in a man who is regenerated it brings forth good fruit, it better appears that evil actions proceed not from the law but from sin, that is, from our corrupt nature: and therefore the apostle teaches also what the true use of the law is by reproving sin in the regenerated, unto the end of the chapter: as a little before (that is, from the seventh verse until now) (Romans 7:7), he declared the use of it in those who are not regenerated.

(10) The deeds of my life, he says, are not in accordance to my will, rather they are contrary to it. Therefore by the consent of my will with the law, and repugnancy with the deeds of my life, it plainly appears that the law and a properly controlled will induce us to do one thing, but corruption, which also has its seat in the regenerated, another thing.

(11) It is to be noted that the very same man is said to will and not to will, in different respects: that is, he is said to will in that he is regenerated by grace: and not to will in that he is not regenerated, or in that he is in the same state into which he was born. But because the part which is regenerated at length becomes conqueror, therefore Paul, speaking on behalf of the regenerated, speaks in such a way as if the corruption which willingly sins were something outside of a man: although afterward he grants that this evil is in his flesh, or in his members.