1 Kings 2:32

Overview - 1 Kings 2
1	David, having given a charge to Solomon,
3	of religiousness;
5	of Joab;
7	of Barzillai;
8	of Shimei;
10	dies.
12	Solomon succeeds.
13	Adonijah, moving Bath-sheba to sue unto Solomon for Abishag, is put to death.
26	Abiathar, having his life given him, is deprived of the priesthood.
28	Joab fleeing to the horns of the altar, is there slain.
35	Benaiah is put in Joab's room, and Zadok in Abiathar's.
36	Shimei, confined to Jerusalem, by occasion of going thence to Gath, is put to death.

1 Kings 2:32  (King James Version)
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.