Proverbs 26:21-23

²¹As dead coals at or to quick coals, and trees at the fire or wood to fire; so a wrathful man raiseth chidings.

²²The words of a privy backbiter be as simple; and those or they come till to the innerest things of the heart.

²³As if thou wouldest adorn a vessel of earth with the dross of silver, so be swelling lips fellowshipped with a full wicked heart.