1 Chroniques 27:5-6

The third captain of the host for the third month was Benaiah the son of Jehoiada, a chief priest: and in his course were twenty and four thousand.

No JFB commentary on these verses.

1 Chroniques 27:7

The fourth captain for the fourth month was Asahel the brother of Joab, and Zebadiah his son after him: and in his course were twenty and four thousand.

Asahel. This officer having been slain at the very beginning of David's reign, his name was probably given to this division in honour of his memory, and his son was invested with the command.