Proverbs 26:9-12

Like a thorn that goes [without being felt] into the hand of a drunken man, So is a proverb in the mouth of a fool [who remains unaffected by its wisdom]. Like a [careless] archer who [shoots arrows wildly and] wounds everyone, So is he who hires a fool or those who [by chance just] pass by. Like a dog that returns to his vomit Is a fool who repeats his foolishness. Do you see a man [who is unteachable and] wise in his own eyes and full of self-conceit? There is more hope for a fool than for him. [Prov 29:20; Luke 18:11; Rom 12:16; Rev 3:17]