In Romans 7, Paul paints a picture of a “first marriage” to the law that ends in death, and a “new marriage” to the risen christ that produces fruit for God; you can’t keep dragging the old relationship into the new one without creating constant inner conflict. The law itself isn’t the villain—it’s holy and good—but sin inside us twists it, using commands to stir up rebellion and expose what’s really going on in the heart (like coveting). That exposure is meant to drive you toward grace, because sin kills but grace abounds, and obedience becomes something that grows out of love rather than guilt.