Proverbs 27:20-22

²⁰The nether world and the place of corruption are never satisfied: so are the eyes of man never satisfied.

²¹As the fining-pot is for silver, and the furnace for gold: so is a man proved according to his praise.

²²Though thou shouldst pound the fool in a mortar, in the midst of grains of wheat with a pestle: still would his folly not depart from him.