Charles Ellicott Commentary 1 Chronicles 27:16

"Furthermore over the tribes of Israel: of the Reubenites was Eliezer the son of Zichri the ruler: of the Simeonites, Shephatiah the son of Maacah:" — 1 Chronicles 27:16 (ASV)

II. THE PRINCES OR EMIRS OF THE TWELVE TRIBES (1 Chronicles 27:16–24).

Furthermore over the tribes of Israel. Literally, and over the tribes of Israel ... the Reubenites had as prince (nâgîd) Eliezer, etc.

Eliezer the son of Zichri. —Originally the emir of the tribe was its leader in war, as well as its chief authority in times of peace. David, as the list (1 Chronicles 27:1–15) indicates, made the important change of nominating the chief commanders himself. The emirs would still manage the internal affairs of their tribes.