2 Samuel 16:20--17:3

16:20 Then Absalom said to Ahithophel, “Give us your advice. What should we do?” 16:21 Ahithophel replied to Absalom, “Have sex with your father’s concubines whom he left to care for the palace. All Israel will hear that you have made yourself repulsive to your father. Then your followers will be motivated to support you.” 16:22 So they pitched a tent for Absalom on the roof, and Absalom had sex with his father’s concubines in the sight of all Israel.

16:23 In those days Ahithophel’s advice was considered as valuable as a prophetic revelation. Both David and Absalom highly regarded the advice of Ahithophel.

The Death of Ahithophel

17:1 Ahithophel said to Absalom, “Let me pick out twelve thousand men. Then I will go and pursue David this very night. 17:2 When I catch up with him he will be exhausted and worn out. I will rout him, and the entire army that is with him will flee. I will kill only the king 17:3 and will bring the entire army back to you. In exchange for the life of the man you are seeking, you will get back everyone. The entire army will return unharmed.”