Although you pound the fool with a pestle
among the grain in the mortar,
his foolishness will not depart from him. Bible see other translations

“his foolishness will not depart from him.” This verse is not saying that fools cannot change their ways, because they can. However, it is making the point that there is no way to change them from the outside. There is no discipline or consequence that somehow guarantees a fool will change. We can do what we can to help them see that their ways are harmful to themselves and others, and pray for them, but ultimately they must make the decision to change and then follow up and act on their decision.

Commentary for: Proverbs 27:22