Numbers 4:20

20 and they go not in to see when the holy thing is swallowed, that they have died.'

Numbers 4:20 Meaning and Commentary

Numbers 4:20

But they shall not go in to see when the holy things are
covered
They were not to be present while they were packing up, test they should see any of them with their eyes; they were not to go in until they were quite covered out of sight; which may signify the hiding of the mysteries of grace in those things under the former dispensation, when even the Levites themselves were not admitted to a sight of them; see ( Ephesians 3:4 Ephesians 3:5 ) ;

lest they die;
by the immediate hand of God.

Numbers 4:20 In-Context

18 `Ye do not cut off the tribe of the families of the Kohathite from the midst of the Levites;
19 but this do to them, and they have lived, and do not die in their drawing nigh the holy of holies: -- Aaron and his sons go in, and have set them, each man to his service, and unto his burden,
20 and they go not in to see when the holy thing is swallowed, that they have died.'
21 And Jehovah speaketh unto Moses, saying,
22 `Take up the sum of the sons of Gershon also by the house of their fathers, by their families;
Young's Literal Translation is in the public domain.