I love this passage of scripture. I think that the Message version explains it so well. It speaks exactly to me. I love how God shows you, sometimes through others, what YOU need to learn and read. Take the time and read through this!
Romans 7:13-25 (The Message)
13-I can already hear your next question: "Does that mean I can't even trust what is good [that is, the law]? Is good just as dangerous as evil?" No again! Sin simply did what sin is so famous for doing: using the good as a cover to tempt me to do what would finally destroy me. By hiding within God's good commandment, sin did far more mischief than it could ever have accomplished on its own.
14-16-I can anticipate the response that is coming: "I know that all God's commands are spiritual, but I'm not. Isn't this also your experience?" Yes. I'm full of myself—after all, I've spent a long time in sin's prison. What I don't understand about myself is that I decide one way, but then I act another, doing things I absolutely despise. So if I can't be trusted to figure out what is best for myself and then do it, it becomes obvious that God's command is necessary.
17-20-But I need something more! For if I know the law but still can't keep it, and if the power of sin within me keeps sabotaging my best intentions, I obviously need help! I realize that I don't have what it takes. I can will it, but I can't do it. I decide to do good, but I don't really do it; I decide not to do bad, but then I do it anyway. My decisions, such as they are, don't result in actions. Something has gone wrong deep within me and gets the better of me every time.
21-23-It happens so regularly that it's predictable. The moment I decide to do good, sin is there to trip me up. I truly delight in God's commands, but it's pretty obvious that not all of me joins in that delight. Parts of me covertly rebel, and just when I least expect it, they take charge.
24-I've tried everything and nothing helps. I'm at the end of my rope. Is there no one who can do anything for me? Isn't that the real question?
25-The answer, thank God, is that Jesus Christ can and does. He acted to set things right in this life of contradictions where I want to serve God with all my heart and mind, but am pulled by the influence of sin to do something totally different.