Romans 7:3

7:3 So then, if she is joined to another man while her husband is alive, she will be called an adulteress. But if her husband dies, she is free from that law, and if she is joined to another man, she is not an adulteress.

Romans 7:7

7:7 What shall we say then? Is the law sin? Absolutely not! Certainly, I would not have known sin except through the law. For indeed I would not have known what it means to desire something belonging to someone else if the law had not said, “Do not covet.”

Romans 7:13

7:13 Did that which is good, then, become death to me? Absolutely not! But sin, so that it would be shown to be sin, produced death in me through what is good, so that through the commandment sin would become utterly sinful.