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 4:28
their charge shall be under the hand of Ithamar the son of Aaron, &c.--The Levites were generally subject to the official command of the priests in doing the ordinary work of the tabernacle. But during the journeyings Eleazar, who was next in succession to his father, took the special charge of the Kohathites [Num 4:16], while his brother Ithamar had the superintendence of the Gershonites and Merarites [Num 4:33].
John Gill on Numbers 4:28
This is the service of the families of the sons of Gershon,.... Which they should execute when the camp and tabernacle were in motion:
in the tabernacle of the congregation in the court; where they should take up their burdens, or which lie in things respecting the tabernacle; this was the part they were to be employed in, namely, in taking care of the hangings of the tabernacle, &c.
and their charge shall be under the hand of Ithamar the son of Aaron the priest; the things committed to their care were delivered by him to them, and they were under his inspection and direction.
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…