Moreover the law entered, that the offense might abound. But where sin abounded, grace did much more abound:
All Commentaries on Romans 5:20 Go To Romans 5
Ambrose of Milan
AD 397
When evil had appeared and innocence had been destroyed, there was no one to do good, not even one. The Lord came to restore grace to nature, in fact to give it increase, that where sin abounded, grace might more abound.