2SA 15:31

31 And it was told to David, that Ahithophel was in the swearing together with Absalom; and David said, Lord, I beseech, make thou fond the counsel of Ahithophel. (And it was told to David that Ahithophel was in the conspiracy with Absalom; and David said, Lord, I beseech thee, turn thou Ahithophel’s advice into foolishness.)