Numbers 1:51-53

⁵¹Whenever it is time for all of you to move to another location, the descendants of Levi are the ones who must dismantle the tent. And when it is time to stop traveling, they are the ones who must set up the Sacred Tent again. Any other person who goes near the Sacred Tent to do this work must be executed.

⁵²The people of each Israeli tribe must set up their tents in their own area, and they must set up a flag/banner that represents their tribe.

⁵³But the male descendants of Levi must set up their tents around the Sacred Tent, in order to protect the other Israeli people from being punished MTY by Yahweh for coming close to the Sacred Tent. The descendants of Levi are the ones who must stand around the Sacred Tent to guard it.”