1-3. You shouldn’t have any trouble understanding this, friends, for you know all the ins and outs of the law—how it works and how its power touches only the living. For instance, a wife is legally tied to her husband while he lives, but if he dies, she’s free. If she lives with another man while her husband is living, she’s obviously an adulteress. But if he dies, she is quite free to marry another man in good conscience, with no one’s disapproval.
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.