He reigned over Judah at Hebron [for] seven years and six months; and he reigned over all Israel and Judah at Jerusalem [for] thirty-three years.

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.

And three of the thirty chief men went down, and came to David in the harvest time unto the cave of Adullam: and the troop of the Philistines encamped in the valley of Rephaim.

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.

Among the thirty, is it not that he [was] honored and became a commander for them? But he did not come up to the three

Among the Thirty were:

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

Uriah the Hittite: thirty-seven in all.

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

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