Jamieson, Fausset & Brown, on 1Kgs 2:5

“Thou knowest also what Joab the son of Sarvia hath done to me, what he did to the two captains of the army of Israel, to Abner the son of Ner, and to Amasa the son of Jether: whom he slew, and shed the blood of war in peace, and put the blood of war on his girdle that was about his loins, and in his shoes that were on his feet.”

“thou knowest also what Joab . . . did--The insolent and imperious conduct of that general had not only been deeply offensive to the feelings (Sa2 18:5-15; Sa2 19:5-7), but calculated to bring reproach on the character, to injure the prospects, and endanger the throne of David. Passing over the injuries committed directly against himself, David dwelt with strong feelings on the base assassination of Abner and Amasa. shed the blood of war in peace, &c.--The obvious meaning is, that in peace he acted towards them as if they had been in a state of warfare; but perhaps these graphic expressions might be designed to impress Solomon's mind more strongly with a sense of the malice, treachery, and cruelty by which those murders were characterized.”

Imported from an open dataset — not yet checked against the printed edition.