1 Kings 1:7

Joab] David's nephew, and at this time captain of the host or national militia (2 Samuel 8:16). His support of Adonijah was probably due to the latter's being the eldest surviving son of David, and to his active character. Abiathar] son of Ahimelech the priest of Nob, who had been put to death by Saul (1 Samuel 22:20). He was a descendant of Aaron's son Ithamar.