2 Samuel 16:23

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.

2 Samuel 17:15

17:15 Then Hushai reported to Zadok and Abiathar the priests, “Here is what Ahithophel has advised Absalom and the leaders of Israel to do, and here is what I have advised.

2 Samuel 17:21

17:21 After the men had left, Ahimaaz and Jonathan climbed out of the well. Then they left and informed King David. They advised David, “Get up and cross the stream quickly, for Ahithophel has devised a plan to catch you.”