Do we, then, nullify the law by this faith? Certainly not! Instead, we uphold the law.
31. Do we then make, etc. When the law is opposed to faith, the flesh immediately suspects that there is some contrariety, as though the one were adverse to the other: and this false notion prevails, especially among those who are imbued with wrong ideas as to the law, and leaving the promises, seek nothing else through it but the righteousness of works.
Man in his corrupted state can never gain acceptance with God by any works of his own. If we had never sinned, obedience would have saved us; but having sinned, nothing we do can atone for our guilt. All justification is resolved into the free grace of God through Christ alone, received by faith.
AI summary
Commenting on Romans 3:19-31
Verse 31. Do we then make void the law. Do we render it vain and useless; do we destroy its moral obligation; and do we prevent obedience to it, by the doctrine of justification by faith ? This was an objection which would naturally be made; and which has thousands of times been since made, that the doctrine of justification by faith tends to licentiousness.