1 Kings 2:32

32 and Jehovah hath turned back his blood on his own head, who hath fallen on two men more righteous and better than he, and slayeth them with the sword, -- and my father David knew not -- Abner son of Ner, head of the host of Israel, and Amasa son of Jether, head of the host of Judah;

1 Kings 2:32 Meaning and Commentary

1 Kings 2:32

And the Lord shall return his blood upon his own head
By way of retaliation, blood for blood:

who fell upon two men more righteous and better than he;
later named; for though they had been in open rebellion against David, yet had submitted, and were reconciled and received into favour; and even their open crimes were not so bad, Solomon judged, as his secret treacherous murders of innocent persons in cool blood; they were men of more honour and integrity than he was, not so cruel and barbarous, though guilty in other respects:

and slew them with the sword, my father not knowing [thereof];
this is observed to remove all suspicion, and which doubtless had been entertained by some, that David had an hand in their death; and that Joab did what he did with his knowledge and consent, and by his advice and order; they having been both concerned in rebellion against him, the one under Ishbosheth, and the other under Absalom:

[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:
the reason of the two hosts, of which they were captains or generals, being thus distinguished, is, because the tribes of Israel were on the side of Ishbosheth, whose general Abner was, in opposition to Judah, who made David their king; and, on the other hand, they were the men of Judah that were first and chiefly in the rebellion of Absalom, whose general Amasa was; of the murder of these two men by Joab, see ( 2 Samuel 3:27 ) ( 20:10 ) .

1 Kings 2:32 In-Context

30 And Benaiah cometh in unto the tent of Jehovah, and saith unto him, `Thus said the king, Come out;' and he saith, `Nay, but here I die.' And Benaiah bringeth back the king word, saying, `Thus spake Joab, yea, thus he answered me.'
31 And the king saith to him, `Do as he hath spoken, and fall upon him, and thou hast buried him, and turned aside the causeless blood which Joab shed, from off me, and from off the house of my father;
32 and Jehovah hath turned back his blood on his own head, who hath fallen on two men more righteous and better than he, and slayeth them with the sword, -- and my father David knew not -- Abner son of Ner, head of the host of Israel, and Amasa son of Jether, head of the host of Judah;
33 yea, turned back hath their blood on the head of Joab, and on the head of his seed to the age; and for David, and for his seed, and for his house, and for his throne, there is peace unto the age, from Jehovah.'
34 And Benaiah son of Jehoiada goeth up and falleth upon him, and putteth him to death, and he is buried in his own house in the wilderness,
Young's Literal Translation is in the public domain.