What does Romans 7:12 say about the nature of the law?

Les explains that Romans 7:12 declares the law, specifically the Ten Commandments, is holy, and the commandment is holy, just, and good. He notes the question then raised: was that which is good made death unto me? Did the commandments become something other than good? The answer is 'God forbid,' don't think such a thought. Les teaches that old Adam had kept him blind to the law's true purpose, which was to convict him, for the law does nothing but give the knowledge of sin. So the law remains holy and good; its role is to reveal sin, not to be sin itself.