Ezra
1 Chronicles 27:2BSB·traditional attribution

Jashobeam son of Zabdiel was in charge of the first division, which was assigned the first month. There were 24,000 men in his division.

Matthew Henry Presbyterian @wholebiblehenry

We have here an account of the regulation of the militia of the kingdom. David was himself a man of war, and had done great things with the sword; he had brought into the field great armies. Now here we are told how he marshalled them when God had given him rest from all his enemies.

Commenting on 1 Chronicles 27:1-15

John Gill Reformed Baptist @doctorgill

Over the first course for the first month,.... The month Nisan, sometimes called Abib, which was March: was Jashobeam the son of Zabdiel; the first and chief of David's worthies, Ch1 11:11. and in his course were twenty and four; and so in all the following ones; this man was of the posterity of Perez, or Pharez, a son of Judah, and so had the...

Jamieson-Fausset-Brown Reformed @jfbcommentary

Jashobeam the son of Zabdiel--(See on Ch1 11:11; Sa2 23:8). Hachmoni was his father, Zabdiel probably one of his ancestors; or there might be different names of the same individual. In the rotation of the military courses, the dignity of precedence, not of authority, was given to the hero.