Adam Clarke on Proverbs 14:9

Fools make a mock at sin - And only fools would do so. But he that makes a sport of sinning, will find it no sport to suffer the vengeance of an eternal fire. Some learned men by their criticisms have brought this verse into embarrassments, out of which they were not able to extricate it. I believe we shall not come much nearer the sense than our present version does.