Charles Ellicott Commentary 1 Chronicles 29:6

"Then the princes of the fathers` [houses], and the princes of the tribes of Israel, and the captains of thousands and of hundreds, with the rulers over the king`s work, offered willingly;" — 1 Chronicles 29:6 (ASV)

Then the chief of the fathers. — And the princes of the clans, etc., volunteered, showed themselves liberal (nâdîb: 1 Chronicles 28:21).

Chief ... princes ... captains ... rulers. — All these words represent a single Hebrew term (sârîm). Princes of the clans or houses = heads of the houses elsewhere.

With the rulers of the king’s work. — The stewards or bailiffs of the royal domains (1 Chronicles 27:25–31). The construction here is like that in 1 Chronicles 28:21. The particle rendered “with” (le) appears to mean much the same as ‘ăd, “even to,” assigning an inclusive limit.