Charles Ellicott Commentary 1 Chronicles 27:5

"The third captain of the host for the third month was Benaiah, the son of Jehoiada the priest, chief: and in his course were twenty and four thousand." — 1 Chronicles 27:5 (ASV)

The third captain of the host. —Hebrew, captain of the third host. So the Vulgate.

Benaiah. —See 1 Chronicles 11:22.

The son of Jehoiada, a chief priest. —Rather, son of Jehoiada the priest, as head, namely, of the third army corps. The term “chief,” or “head,” belongs to Benaiah, not to his father. But perhaps it is an erroneous gloss on Jehoiada. (Compare 2 Chronicles 23:8.) Both the Septuagint and Vulgate make Benaiah the priest.