15 'And Aaron hath finished—his sons also—covering the sanctuary, and all the vessels of the sanctuary, in the journeying of the camp, and afterwards do the sons of Kohath come in to bear 'it', and they do not come unto the holy thing, that they have died; these 'things are' the burden of the sons of Kohath in the tent of meeting.
Matthew Henry's Commentary on Numbers 4:15
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.