2 Samuel 17:22-24

22Then David arose, and all the people that were with him, and they passed over the Jordan; by the morning light there was not one of them missing that had not gone over the Jordan.

23And when Ahithophel saw that his counsel was not followed, he saddled his ass, and arose and went to his house, to his city, and gave charge to his household, and hanged himself, and he died; and he was buried in the sepulchre of his father.

24And David came to Mahanaim. And Absalom passed over the Jordan, he and all the men of Israel with him.