In every sin there is folly.

[reaganmarsh]

"In every sin there is folly (Jer 4:22). A man will be ashamed of his folly. Is not he a fool who labours more for the bread that perishes than for the bread of life? Is not he a fool who for a lust or a trifle will lose heaven...? Is not he a fool who, to safeguard his body, will injure his soul? As if one should let his arm or head be cut, to save his vest! .... Is not he a fool who will believe a temptation before a promise? Is not he a fool who minds his recreation more than his salvation? How may this make men ashamed, to think that they may inherit not land, but folly (Pro 14:18)."

--Thomas Watson, The Doctrine of Repentance, 42.