16:19. Besides this, whom shall I serve? is it not the king's son? as I have served thy father, so will I serve thee also.

16:20. And Absalom said to Achitophel: Consult what we are to do.

16:21. And Achitophel said to Absalom: Go in to the concubines of thy father, whom he hath left to keep the house: that when all Israel shall hear that thou hast disgraced thy father, their hands may be strengthened with thee.

Their hands may be strengthened, etc. . .The people might apprehend lest Absalom should be reconciled to his father, and therefore they followed him with some fear of being left in the lurch, till they saw such a crime committed as seemed to make a reconciliation impossible.

16:22. So they spread a tent for Absalom on the top of the house, and he went in to his father's concubines before all Israel.

16:23. Now the counsel of Achitophel, which he gave in those days, was as if a man should consult God: so was all the counsel of Achitophel, both when he was with David, and when he was with Absalom.

2 Kings Chapter 17

Achitophel's counsel is defeated by Chusai: who sendeth intelligence to
David. Achitophel hangeth himself.

17:1. And Achitophel said to Absalom: I will choose me twelve thousand men, and I will arise and pursue after David this night.

17:2. And coming upon him (for he is now weary, and weak handed) I will defeat him: and when all the people is put to flight that is with him, I will kill the king who will be left alone.