Proverbs 27:21-23

Modern English Version

²¹ As the refining pot for silver, and the furnace for gold,
    so is a man to his praise.

²² Though you should grind a fool in a mortar
    among wheat with a pestle,
    yet his foolishness will not depart from him.

²³ Be diligent to know the state of your flocks,
    and look well to your herds;