The Law was put in place to define sin and stimulate our sin nature. It also leads people to Christ and convinces those already in Christ that only God can change them. Paul explains what this looked like in his own life, while also describing the inward tension he experiences between his old sin nature and his desire to follow God's Law. Paul understands that, on his own, he is a wretched man who desperately needs someone to save him. The chapter ends with him thanking God for doing just that.