Paul reveals the struggle he is experiencing as a believer in Christ. He admires the Law and wants to keep it and yet he finds that he fails and commits the very sins that he does not want to do. We learn from this that the Law is good and that this struggle should be present in every true believer - those who do not struggle with sin should question whether they are saved at all. Yet here, Paul seems to be at a point in his experience where sin has the upper hand - like those in Galatians 5, he is walking according to the flesh and not according to the Spirit. Only the Spirit of life can set us free from this continuing bondage to sin, as we appropriate the freedom Paul spoke of in Romans 6 and realize that as believers we are not under Law and in the flesh any more but we are under grace and in the Spirit.