... death in the sinner by that which is good,—that sin by the commandment might become, might be seen to be, exceeding sinful. The law is like a chemical test. It eats into sin enough to show what sin is, and there stops. The lunar caustic bites into the dead flesh of the mortified limb; but there is no healing virtue in the lunar caustic. The moral law makes no inward alterations in a sinner. In its own distinctive and proper action ... — Sermons to the Natural Man • William G.T. Shedd