1 Kings 2:31

29King Solomon was told, “Joab has fled to the LORD’s Tent; and behold, he is by the altar.” Then Solomon sent Benaiah the son of Jehoiada, saying, “Go, fall on him.”

30Benaiah came to the LORD’s Tent, and said to him, “The king says, ‘Come out!’” He said, “No; but I will die here.” Benaiah brought the king word again, saying, “This is what Joab said, and this is how he answered me.”

31The king said to him, “Do as he has said, and fall on him, and bury him, that you may take away the blood, which Joab shed without cause, from me and from my father’s house.

32The LORD will return his blood on his own head, because he fell on two men more righteous and better than he, and killed them with the sword, and my father David didn’t know it: Abner the son of Ner, captain of the army of Israel, and Amasa the son of Jether, captain of the army of Judah.

33So their blood will return on the head of Joab and on the head of his offspring forever. But for David, for his offspring, for his house, and for his throne, there will be peace forever from the LORD.”