Then someone told David saying, “Ahithophel is among the conspirators with Absalom.” So David prayed, “Adonai, please turn the counsel of Ahithophel into foolishness.”
but if you return to the city and say to Absalom, ‘I will be your servant, O king—I was your father’s servant from then, but now I will be your servant,’ then you can thwart Ahithophel’s counsel for me.
So Ahithophel said to Absalom, “Go to your father’s concubines whom he has left to take care of the palace. Then all Israel will hear that you have made yourself abhorrent to your father and the hands of all who are with you will also be strengthened.”