Then it was reported to David that Ahithophel also had joined in swearing with Absalom. And David said, " O Lord, I beg you, to uncover the foolishness of the counsel of Ahithophel."
But if you return to the city, and you say to Absalom, 'I am your servant, O king; just as I have been the servant of your father, so too will I be your servant,' you will destroy the counsel of Ahithophel
And Ahithophel said to Absalom: "Enter to the concubines of your father, whom he left behind in order to care for the house. Thus, when all of Israel will hear that you disgraced your father, their hands may be strengthened with you."
And when Hushai had gone to Absalom, Absalom said to him: "Ahithophel has spoken a word in this manner. Should we do it or not? What counsel do you give?"