Números 1:51

51 Whenever the tabernacle is to move, the Levites are to take it down, and whenever the tabernacle is to be set up, the Levites shall do it. Anyone else who approaches it is to be put to death.

51 And when the Tent of meeting goes forward, the Levites are to take it down; and when it is to be put up, they are to do it: any strange person who comes near it is to be put to death.