Brother of insipidity or impiety, a man greatly renowned for his sagacity among the Jews. At the time of Absalom's revolt he deserted David (Psalm 41:9; 55:12-14) and espoused the cause of Absalom (2 Samuel 15:12). David sent his old friend Hushai back to Absalom, in order that he might counteract the counsel of Ahithophel (2 Samuel 15:31-37). This end was so far gained that Ahithophel saw he had no longer any influence, and accordingly he at once left the camp of Absalom and returned to Giloh, his native place, where, after arranging his wordly affairs, he hanged himself, and was buried in the sepulchre of his fathers (2 Samuel 17:1-23). He was the type of Judas (Psalm 41:9).