2 Samuel 15:31; 2 Samuel 15:34

31 Now someone told David, saying, "Ahithophel is among the conspirators with Absalom." And David said, "O LORD , I pray, make the counsel of Ahithophel foolishness."

34 "But if you return to the city, and say to Absalom, 'I will be your servant, O king; as I have been your father's servant in time past, so I will now be your servant,' then you can thwart the counsel of Ahithophel for me.