6
He was the Benaiah who was one of the Thirtyn soldiers. Benaiah was a brave warrior who led those men. Benaiah's son Ammizabad was in charge of Benaiah's division.
6
that is Benaiah, the strongest man among (the) thirty, and above (the) thirty; and Ammizabad, his son, was sovereign of his company (after him). (this is Benaiah, the strongest man among The Thirty, and he was a leader of The Thirty; and his son Ammizabad was the leader of his company after him.)