5 and more officials in the time of King David

1 Chronicles 18:14-17

David reigned over all Israel, doing what was just and right for all his people.

Joab son of Zeruiah was over the army;

Jehoshaphat son of Ahilud was recorder;

Zadok son of Ahitub and Ahimelek son of Abiathar were priests;

Shavsha (or Seraiah) was secretary;

Benaiah son of Jehoiada was over the Kerethites and Pelethites;

and David’s sons were chief officials at the king’s side.

2 Samuel 8:15-18 reads the same except that it says that David's sons were priests (no doubt in the older sense of leaders or advisors)