18 You must not let the tribe of the clans of the Kohathites be destroyed from among the Levites. 19 This is how you must deal with them in order that they may live and not die when they come near to the most holy things: Aaron and his sons shall go in and assign each to a particular task or burden. 20 But the Kohathites must not go in to look on the holy things even for a moment; otherwise they will die.
21 Then the Lord spoke to Moses, saying: 22 Take a census of the Gershonites also, by their ancestral houses and by their clans;
Matthew Henry's Commentary on Numbers 4:18-22
Commentary on Numbers 4:4-20
(Read Numbers 4:4-20)
The Kohathites were to carry the holy things of the tabernacle. All the holy things were to be covered; not only for security and respect, but to keep them from being seen. This not only marked the reverence due to holy things, but the mystery of the things signified by those types, and the darkness of the dispensation. But now, through Christ, the case is altered, and we are encouraged to come boldly to the throne of grace.
Commentary on Numbers 4:21-33
(Read 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 to be done regularly. All the things were delivered them by name. It intimates the care God takes of his church and every member of it. The death of the saints is represented as the taking down of the tabernacle, 2 Peter 1:14. All shall be raised up in the great day, when these vile bodies shall be made like the glorious body of Jesus Christ, and so shall be for ever with the Lord.