18 Benaiah son of Jehoiada was over the Kerethites and Pelethites; and David’s sons were priests.a

Read 2 Samuel 8:18 Using Other Translations

And Benaiah the son of Jehoiada was over both the Cherethites and the Pelethites; and David's sons were chief rulers.
and Benaiah the son of Jehoiada was over the Cherethites and the Pelethites, and David's sons were priests.
Benaiah son of Jehoiada was captain of the king’s bodyguard. And David’s sons served as priestly leaders.