And he conferred with Joab the son of Zeruiah, and with Abiathar the priest: and they following Adonijah, helped him.

Moreover, thou knowest also what Joab the son of Zeruiah did to me, and what he did to the two captains of the armies 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 upon his girdle that was about his loins, and in his shoes that were on his feet.

And king Solomon answered and said to his mother, And why dost thou ask Abishag the Shunamite for Adonijah? ask for him the kingdom also; for he is my elder brother; even for him, and for Abiathar the priest, and for Joab the son of Zeruiah.