2 Samuel 15:30-31

King James Version

³⁰ And David went up by the ascent of mount Olivet, and wept as he went up, and had his head covered, and he went barefoot: and all the people that was with him covered every man his head, and they went up, weeping as they went up.

³¹ And one told David, saying, Ahithophel is among the conspirators with Absalom. And David said, O Lord, I pray thee, turn the counsel of Ahithophel into foolishness.