1 Kings 2:32

2:32 Yahweh 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, [to wit], Abner the son of Ner, captain of the host of Israel, and Amasa the son of Jether, captain of the host of Judah.
-World English Bible

Other Translation

2:32 And the LORD shall return his blood upon his own head, who fell upon two men more righteous and better than he, and slew them with the sword, my father David not knowing [thereof, to wit], Abner the son of Ner, captain of the host of Israel, and Amasa the son of Jether, captain of the host of Judah.
-King James Version