Rom 7:19

“Therefore it is in our power to will not to think these things; but not to bring it about that they shall pass away, so as not to come into the mind again; for this does not lie in our power, as I said; which is the meaning of that statement, "The good that I would, I do not; "for I do not will to think the things which injure me; for this good is altogether innocent. But "the good that I would, I do not; but the evil which I would not, that I do; "not willing to think, and yet thinking what I do not will. And consider whether it was not for these very things that David entreated God, grieving that he thought of those things which he did not will: "O cleanse Thou me from my secret faults. Keep Thy servant also from presumptuous sins, lest they get the dominion over me; so shall I be undefiled, and innocent from the great offence." And the apostle too, in another place: "Casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ."”

“In fact, I would not have known sin if the law had not said: You shall not covet. And further: Without the law, sin is dead. For what benefit is it to me to know what I cannot avoid? What benefit is it to me to know that the law of my flesh opposes me? Paul is opposed, and he sees the law of his flesh resisting the law of his mind, and he is held captive under the law of sin, and does not presume of his own conscience; but by the grace of Christ, he trusts that he will be liberated from the body of death: and do you think that anyone who knows cannot sin? Paul says: For I do not do the good that I want, but the evil that I do not want, that I do: and do you think that knowledge benefits man, which increases envy of sin?”

“Do you see, how he acquits the essence of the soul, as well as the essence of the flesh, from accusation, and removes it entirely to sinful actions? For if the soul willeth not the evil, it is cleared: and if he does not work it himself, the body too is set free, and the whole may be charged upon the evil moral choice. For willing is indeed natural, and is from God: but willing on this wise is our own, and from our own mind.”

“Then when he says, for the good which I will, I do not, he manifests what he had said by citing man's action, which is a sign and effect of human capability. For man does not have the strength to accomplish good, because he does not do the good he wants but does the evil he does not want. This has been explained earlier.”