So shall their blood come back on the head of Joab and on the head of his descendants forever. But for David and for his descendants and for his house and for his throne there shall be peace from the LORD forevermore.”
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
So Benaiah the son of Jehoiada went up,.... To Gibeon, which was a great high place, Kg1 3:4; and fell upon him, and slew him; at the altar; or, dragging him from it at some distance, drew his sword and slew him: and he was buried in his own house in the wilderness; not in his dwelling house strictly taken, but in a garden or...
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