John Gill's Bible Commentary Ver. 4. And Benaiah the son of Jehoiada [was] over the host , etc.] General of the army in the room of Joab, ( 1 Kings 2:35); and Zadok and Abiathar [were] the priests ; so they were when Solomon came to the throne; but Abiathar was deposed by him after some time, though he might retain the name afterwards, and be employed, as Ben Gersom thinks, in case of necessity, in the room of Zadok, or, however, be employed as a common priest at Jerusalem, upon a reconciliation with Solomon; though Kimchi thinks another Abiathar is meant, which is not so likely.
Matthew Henry Commentary
Verses 1-19 - In the choice of the great officers of Solomon's court, no doubt, his wisdom appeared. Several are the same that were in his father's time. plan was settled by which no part of the country was exhausted to supply his court, though each sent its portion.
Original Hebrew ובניהו1141 בן1121 יהוידע3077 על5921 הצבא6635 וצדוק6659 ואביתר54 כהנים׃3548