Numbers 1:51-53 ▼

51 So when the tabernacle is to set out, the Levites shall take it down; and when the tabernacle encamps, the Levites shall set it up. But the layman who comes near shall be put to death.

52 And the sons of Israel shall camp, each man by his own camp, and each man by his own standard, according to their armies.

53 But the Levites shall camp around the tabernacle of the testimony so that there will be no wrath on the congregation of the sons of Israel. So the Levites shall keep charge of the tabernacle of the testimony.”