Numbers 4:20

4:20 But the Kohathites are not to go in to watch while the holy things are being covered, or they will die.”

Numbers 7:9

7:9 But to the Kohathites he gave none, because the service of the holy things, which they carried on their shoulders, was their responsibility.

Numbers 29:7

The Day of Atonement

29:7 “‘On the tenth day of this seventh month you are to have a holy assembly. You must humble yourselves; you must not do any work on it.