The LORD will bring his bloodshed back upon his own head, for without the knowledge of my father David he struck down two men more righteous and better than he when he put to the sword Abner son of Ner, commander of Israel’s army, and Amasa son of Jether, commander of Judah’s army.
Abiathar and Joab were both aiding and abetting in Adonijah's rebellious attempt, and it is probable were at the bottom of this new motion made of Adonijah for Abishag, and it should seem Solomon knew it, Kg1 2:22. This was, in both, an intolerable affront both to God and to the government, and the worse because of their high station and the great influence their examples might have upon many.
Commenting on 1 Kings 2:26-34
Their blood shall therefore return upon the head of Joab, and upon the head of his seed for ever,.... Not only upon Joab, but upon his posterity as long as there would be any; signifying, that Joab's death would not be a sufficient satisfaction, but the punishment of his murders would be continued to his offspring: see Sa2 3:29; but upon David, and upon his...
JOAB SLAIN. (1Ki. 2:28-45) Then tidings came to Joab--The execution of these sentences respectively on Adonijah and Abiathar prepared Joab for his fate. Death, due to his great crimes (Num 35:33), would long ago have been inflicted, had not his power and popularity with the army been too formidable for the old king.
Commenting on 1 Kings 2:28-45