2 Samuel 15:30-31

30David was climbing the slope of the Mount of Olives, weeping as he ascended. His head was covered, and he was walking barefoot. All of the people with him covered their heads and went up, weeping as they ascended.

31Then someone reported to David, “Ahithophel is among the conspirators with Absalom.” “Lord,” David pleaded, “please turn the counsel of Ahithophel into foolishness!”