1KI 2:5

5 And also, you have known that which he did to me—Joab son of Zeruiah—that which he did to two heads of the hosts of Israel, to Abner son of Ner, and to Amasa son of Jether—that he slays them, and makes the blood of war in peace, and puts the blood of war in his girdle, that [is] on his loins, and in his sandals that [are] on his feet;