2 Samuel 17:22-24

22So David and all the people with him got up and crossed the Jordan. By daybreak, there was no one who had not crossed the Jordan.

23When Ahithophel realized that his advice had not been followed, he saddled his donkey and set out for his house in his hometown. He set his house in order and hanged himself. So he died and was buried in his father’s tomb.

24David had arrived at Mahanaim by the time Absalom crossed the Jordan with all the men of Israel.