2 Samuel 23:8

But Zadok the priest, Benaiah the son of Jehoiada, Nathan the prophet, Shimei, Rei, and the mighty men who belonged to David, were not with Adonijah.

Now these are the heads of the mighty men whom David had, who gave him strong support in his kingdom, together with all Israel, to make him king, according to the word of Yahweh concerning Israel.

These constitute the list of the mighty men whom David had: Jashobeam, the son of a Hachmonite, the chief of the thirty; he lifted up his spear against three hundred slain by him at one time.

Jashobeam the son of Zabdiel was over the first division for the first month; and in his division were 24,000.

David’s Mighty Men