He had the support of Zeruiah's son Joab and of Abiathar the priest, who followed Adonijah and assisted him,

Adonijah has sacrificed myriads of oxen, fattened cattle, and sheep, and he has invited all of the king's sons, Abiathar the priest, and Joab the commander of the army, but he has not invited your servant Solomon.

Well now, he went down today and sacrificed lots of oxen, fattened cattle, and sheep, and has invited all the king's sons, the army commanders, and Abiathar the priest. They're having a party together and saying, "Long live King Adonijah!'

While he was still asking that question, Jonathan, the son of Abiathar the priest arrived, so Adonijah told him, "Come on in, since you're a worthy man and are bringing us good news!"

But King Solomon replied to his mother, "Why are you asking Abishag the Shunammite for Adonijah? Why not ask me to give up the kingdom for him, since he's my older brother, and why not ask for Abiathar the priest, and for Zeruiah's son Joab?"

The king also told Abiathar the priest, "Go home to Anathoth. You deserve to die, but I won't kill you today, because you carried the ark of the Lord GOD before my father David and because you shared all the troubles that my father went through."

So Solomon fired Abiathar as the LORD's priest, thus fulfilling the promise that the LORD had spoken in Shiloh concerning Eli's household.

The king appointed Jehoiada's son Benaiah in charge of the army to replace Joab and also appointed Zadok the priest to replace Abiathar.

Jehoiada's son Benaiah commanded the army, Zadok and Abiathar served as priests,