But I see another law - Note, Romans 7:21.

In my members - In my body; in my flesh; in my corrupt and sinful propensities; Note, Romans 6:13; compare 1 Corinthians 6:15; Colossians 3:5. The body is composed of many members; and as the flesh is regarded as the source of sin Romans 7:18, the law of sin is said to be in the members, that is, in the body itself.

Warring against - Fighting against; or resisting.

The law of my mind - This stands opposed to the prevailing inclinations of a corrupt nature. It means the same as was expressed by the phrase "the inward man," and denotes the desires and purposes of a renewed heart.

And bringing me into captivity - Making me a prisoner, or a captive. This is the completion of the figure respecting the warfare. A captive taken in war was at the disposal of the victor. So the apostle represents himself as engaged in a warfare; and as being overcome, and made an unwilling captive to the evil inclinations of the heart. The expression is strong; and denotes strong corrupt propensities. But though strong, it is believed it is language which all sincere Christians can adopt of themselves, as expressive of that painful and often disastrous conflict in their bosoms when they contend against the native propensities of their hearts.

Romans 7:23 Parallel Commentaries

The Fainting Warrior
Now, humble Christians are often the dupes of a very foolish error. They look up to certain advanced saints and able ministers, and they say, "Surely, such men as these do not suffer as I do; they do not contend with the same evil passions as those which vex and trouble me." Ah! if they knew the heard of those men, if they could read their inward conflicts, they would soon discover that the nearer a man lives to God, the more intensely has he to mourn over his own evil heart, and the more his Master …
Charles Haddon Spurgeon—Spurgeon's Sermons Volume 5: 1859

There are Therefore in us Evil Desires, by Consenting not unto which we Live...
20. There are therefore in us evil desires, by consenting not unto which we live not ill: there are in us lusts of sins, by obeying not which we perfect not evil, but by having them do not as yet perfect good. The Apostle shows both, that neither is good here perfected, where evil is so lusted after, nor evil here perfected, whereas such lust is not obeyed. The one forsooth he shows, where he says, "To will is present with me, but to perfect good is not;" [1875] the other, where he says, "Walk in …
St. Augustine—On Continence

Its Source
Let us here review, briefly, the ground which we have already covered. We have seen, first, that "to justify" means to pronounce righteous. It is not a Divine work, but a Divine verdict, the sentence of the Supreme Court, declaring that the one justified stands perfectly conformed to all the requirements of the law. Justification assures the believer that the Judge of all the earth is for him, and not against him: that justice itself is on his side. Second, we dwelt upon the great and seemingly insoluable …
Arthur W. Pink—The Doctrine of Justification