2 Samuel 15:12

Now David informed them, saying, “Ahithophel is among the conspirators with Absalom.” And David said, “O Yahweh, I pray, make the counsel of Ahithophel foolishness.”

Now Absalom and all the people, the men of Israel, had entered Jerusalem, and Ahithophel with him.

Now the counsel of Ahithophel, which he counseled in those days, was as if one asked of the word of God; so was all the counsel of Ahithophel regarded by both David and Absalom.

Now Ahithophel saw that his counsel was not followed. So he saddled his donkey and arose and went to his home, to his city, and set his house in order, and strangled himself; thus he died and was buried in the grave of his father.

Eliphelet the son of Ahasbai, the son of the Maacathite, Eliam the son of Ahithophel the Gilonite,

Ahithophel was counselor to the king; and Hushai the Archite was the king’s friend.

A Psalm of David. When he fled from Absalom his son. O Yahweh, how my adversaries have become many! Many are rising up against me.

Even my close friend in whom I trusted, Who ate my bread, Has lifted up his heel against me.

But it is you, a man my equal, My close companion and my familiar friend;