Now Abishai the brother of Joab the son of Zeruiah [was] himself the leader of the thirty. He [was] wielding his spear against three hundred slain and {gained a name} among the thirty.

He was the most honored of the Thirty, but he did not become one of the Three. David put him in charge of his bodyguard.

Among the Thirty were:

Joab’s brother Asahel,
Elhanan son of Dodo of Bethlehem,

And three of the thirty chiefs went down, and came to David in the harvest time to the cave of Adullam, when the troop of the Philistines was encamped in the valley of Rephaim.

Uriah the Hittite: thirty-seven in all.

David was thirty years old when he began to reign; he reigned forty years.

In Hebron he reigned over Judah seven years and six months; and in Jerusalem he reigned thirty-three years over all Israel and Judah.

And David again gathered all the chosen men of Israel, thirty thousand.

Such things did Benaiah the son of Jehoiada and was the noblest of thirty: But not like to any of the three in facts of war.