Romans 7:17

So now it is no more I that do it, but sin which dwelleth in me. [From what I have said it is apparent that it is not my spiritual or better self, uninfluenced by the flesh, which does the evil; but it is sin which dwells in my flesh that does it. If I were left to my spiritual self, uninfluenced by the flesh, I would do as the law requires; but sin excites and moves my fleshly nature, and thus prompts me to break the law. The apostle is not arguing for the purpose of showing that he is not responsible for his own conduct; the establishment of such a fact would have no bearing whatever on the question in hand. He is arguing that the law is good, and he seeks to prove this by showing that his better, regenerated, spiritual nature loves it, and strives to fulfill it, and never in any way rebels against it; and that any seeming rebellion found in him is due to his fleshly, sinful nature--that part of himself which he himself repudiates as vile and unworthy, and which he would fain disown.]