Matthew Poole and continuators on 1 Chronicles 29:21

21 And they sacrificed sacrifices unto the LORD , and offered burnt-offerings unto the LORD, on the morrow after that day, even a thousand bullocks, a thousand rams, and a thousand lambs, with their drink-offerings, and sacrifices in abundance for all Israel :

Before the Ark, which was there.

Either 1. on the behalf of all Israel, to praise God in their Names, to procure Gods Presence and Blessing for them all. Or 2. so many, that the Feasts which, after the manner, were made of the remainders of the Sacrifices, were abundantly sufficient for all the Israelites which were then present and desired to partake of them; or for all the Governours of Israel there assembled, who may well pas[illegible: 1+ letters] under the name of all Israel, because they represented them all.