Proverbs 27:22
Though you grind a fool like grain with mortar and a pestle, yet his folly will not depart from him.
Berean Standard Bible
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Though thou shouldest bray a fool in a mortar among wheat with a pestle, yet will not his foolishness depart from him.
Though you grind a fool in a mortar with a pestle along with grain, yet his foolishness will not be removed from him.