Charles Ellicott Commentary 1 Chronicles 27:31

"All these were the rulers of the substance which was king David`s." — 1 Chronicles 27:31 (ASV)

And over the flocks. —Of sheep and goats.

Jaziz the Hagerite. —See 1 Chronicles 5:10–19 for the conquest of East Gilead, the home of the Hagrim, or “Hagerites,” by the tribe of Reuben, in the days of Saul. David’s herds of camels and flocks of small cattle may have grazed in the pastures east of the Jordan, under the charge of his Bedouin overseers.

All these were the rulers of the substance that was King David’s. —The word rendered “rulers” is sârîm, “captains” or “princes.” (See 1 Chronicles 27:22.) The same term is translated “stewards” in 1 Chronicles 28:1.

Substance (rĕkûsh) is an old word, denoting especially the movable wealth of a nomad chief. (Compare to Genesis 12:5 and Genesis 14:21.) The wealth of David consisted partly of flocks and herds, but partly also of the produce of husbandry and, no doubt, of commerce. (See 1 Chronicles 14:1 and 1 Chronicles 22:4.) The period of the kings saw Israel a settled nation that had exchanged the purely nomadic life for an ordered social existence.