John Chrysostom

Here again he calls sin a law warring against the other, not in respect of good order, but from the strict obedience yielded to it by those who comply with it. As then it gives the name of master to Mammon, and of god to the belly, not because of their intrinsically deserving it, but because of the extreme obsequiousness of their subjects; so here he calls sin a law, owing to those who are so obsequious to it, and are afraid to leave it, just as those who have received the Law dread leaving the Law. This then, he means, is opposed to the law of nature; for this is what is meant by "the law of my mind." And he next represents an array and battle, and refers the whole struggle to the law of nature. For that of Moses was subsequently added over and above: yet still both the one and the other, the one as teaching, the other as praising what was right, wrought no great effects in this battle; so great was the thraldom of sin, overcoming and getting the upper hand as it did. And this Paul setting forth, and showing the decided victory it had, says, "I see another law warring against the law of my mind, and bringing me into captivity." He does not use the word conquering only, but "bringing me into captivity to the law of sin." He does not say the bent of the flesh, or the nature of the flesh, but "the law of sin." That is, the thrall, the power. In what sense then does he say, "Which is in my members?" Now what is this? Surely it does not make the members to be sin, but makes them as distinct from sin as possible. For that which is in a thing is diverse from that wherein it is. As then the commandment also is not evil, because by it sin took occasion, so neither is the nature of the flesh, even if sin subdues us by means of it. For in this way the soul will be evil, and much more so too, since it has authority in matters of action. But these things are not so, certainly they are not.