Numbers 4:20

20 The Kohathites must not enter and look at the holy things, even for a second, or they will die."

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 "Don't let the Kohathites be cut off from the Levites.

19 Do this for the Kohathites so that they may go near the Most Holy Place and not die: Aaron and his sons must go in and show each Kohathite what to do and what to carry.

20 The Kohathites must not enter and look at the holy things, even for a second, or they will die."

21 The Lord said to Moses,

22 "Count the Gershonites by families and family groups.