Rom. 7:24. Wretched man that I am! Who will deliver me from this body of death?
The natural law became insufficient, the written law proved powerless, and the tyranny of sin conquered both. From where, then, shall we hope for salvation? "Who will deliver me from this body of death?", that is, subject to death. For the body, having become liable to suffering as a result of the transgression, thereby also became convenient for sin. Someone will say: if the body was convenient for sin, then why were sinners punished before the coming of Christ? Because they were given such commandments as they were able to fulfill even while being under the power of sin.
Rom. 7:25. I thank my God through Jesus Christ, our Lord.
Having been placed in a hopeless situation and having found no other savior, he of necessity found Christ as Savior. Therefore he also thanks "God" the Father "through Jesus Christ our Lord," that is, the cause of thanksgiving is Christ. He, he says, accomplished what the law could not do: He delivered me from the weakness of the flesh, having strengthened it, so that it no longer stands under the tyranny of sin; but just as through the transgression of Adam, having become mortal, it became easily overcome by sin, so through the obedience of the Crucified and Risen One, having received the pledge of incorruption, it manfully resists sin.
Rom. 7:25. So then, with my mind I myself serve the law of God, but with my flesh the law of sin.