Then David arose, and all the people who were with him, and they crossed the Jordan. By daybreak not one was left who had not crossed the Jordan. When Ahithophel saw that his counsel was not followed, he saddled his donkey and went off home to his own city. He set his house in order and hanged himself, and he died and was buried in the tomb of his father. (2 Samuel 17:22-23 ESV)