2 Samuel 15:30-31

30And David went up the ascent of the Mount of Olives, and wept as he went, and 1his head was covered and he walked 2barefoot. Then all the people who were with him each covered his head and went up weeping as they went. 31Now someone told David, saying, “3Ahithophel is among the conspirators with Absalom.” And David said, “O Lord, I pray, 4make the counsel of Ahithophel foolishness.”