1 Kings 2:28-31

28The news reached Joab. (He had supported Adonijah, although he hadn’t supported Absalom.) So Joab fled to the Lord’s tent and clung to the horns of the altar.

29After King Solomon heard that Joab had fled to the altar in the tent of the Lord, Solomon sent Benaiah, son of Jehoiada, to kill Joab.

30When Benaiah came to the tent of the Lord, he told Joab, “The king says, ‘Come out.’ ” “No,” Joab answered, “I’ll die here.” So Benaiah reported to the king what Joab had said and how he had answered.

31The king answered, “Do as he said. Kill him, and bury him. You can remove the innocent blood—the blood which Joab shed—from me and my father’s family.