2 Samuel 17:21-23

New Catholic Bible

²¹ After they had departed, the two men climbed out of the cistern and went to warn King David. “Leave immediately and cross the water quickly,” they said, as they related to him how Ahithophel had decided to proceed against him. ²² Therefore, David and all of the people with him set out and crossed the Jordan. By dawn there was not a single one left who had not crossed to the opposite bank of the Jordan.

²³ When Ahithophel realized that his advice had not been followed, he saddled his donkey and departed straight home to his own town. Then, having left detailed instructions to ensure the well-being of his family, he hanged himself. He died and was buried in his father’s tomb.