Matthew Henry on Numbers 4:21-33
We have here the charge of the other two families of the Levites, which, though not so honourable as the first, yet was necessary, and was to be done regularly. 1. The Gershonites were charged with all the drapery of the tabernacle, the curtains, and hangings, and the coverings of badgers' skins, Num 4:22-26. These they were to take down when the cloud removed, and the ark and the rest of the holy things were carried away, to pack up and bring with them, and then to set up again, where the cloud rested. Aaron and his sons allotted to them their respective charge: "You shall take care of such a curtain, and you of such a hanging, that every one may know his work, and there may be no confusion…
Read the whole note in the consoleJamieson-Fausset-Brown on Numbers 4:17
Cut ye not off the tribe of the families of the Kohathites from among the Levites, &c.--a solemn admonition to Moses and Aaron to beware, lest, by any negligence on their part, disorder and improprieties should creep in, and to take the greatest care that all the parts of this important service be apportioned to the proper parties, lest the Kohathites should be disqualified for their high and honorable duties. The guilt of their death would be incurred by the superintending priest, if he failed to give proper directions or allowed any irreverent familiarity with sacred things.
John Gill on Numbers 4:22
Take also the sum of the sons of Gershon,.... As well as of the sons of Kohath; for though Gershon was Levi's eldest son, yet his posterity were not excused from the service of the tabernacle, and bearing things of it in journeying:
throughout the houses of their fathers, by their families; all in their several houses, and in the several families in those houses, that were of the age next mentioned, were to be numbered.
John Calvin on Numbers 4:4–end
Numbers 4:4-20, 24-28, 31-33
4. This shall be the service of the sons of Kohath in the tabernacle of the congregation, about the most holy things:
4. Istud erit opus filiorum Cehath in tabernaculo conventionis Sancti sanctorum.
5. And when the camp setteth forward, Aaron shall come, and his sons, and they shall take down the covering vail, and cover the ark of testimony with it:
5. Veniet autem Aharon et filii ejus quando transferenda erunt castra, et deponent velum tentorii, et operient illo arcata testimonii.
6. And shall put thereon the covering of badgers' skins, and shall spread over it a cloth wholly of blue, and shall put in the staves thereof.
6. Potentque super illam operimen…