Is it ensure, insure, or assure?
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 (Ps. 41:9; 55:12-14) and espoused the cause of Absalom (2 Sam. 15:12). David sent his old friend Hushai back to Absalom, in order that he might counteract the counsel of Ahithophel (2 Sam. 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 Sam. 17:1-23). He was the type of Judas (Ps. 41:9).
in the Old Testament, one of King David's most trusted advisers. He took a leading part in the revolt of David's son Absalom, and Ahithophel's defection was a severe blow to David. Having consulted Ahithophel about his plans to proceed against David, Absalom then sought advice from Hushai, another of David's counselors. Hushai, who remained secretly loyal to the king, betrayed Absalom's cause by opposing Ahithophel's plan and proposing in its place a scheme of his own, which actually gave the advantage to David. This plan Absalom accepted. Ahithophel, recognizing that Hushai had outwitted him, foresaw the disastrous defeat of Absalom's forces and took his own life (II Samuel 15:31-37; 16:20-17:23).