Numbers 2:2-3

2‘The Israelites must put up their tents on each side of the Tent of Meeting. They must not be very near to it but they must be all around it. They must live together in their tribes. Each person must be with his own tribe. Each tribe must have its own flag.

3The people in Judah's tribe must be on the east side of the Tent. They must have their flag with them, and they must put up their tents in groups. The leader of the tribe of Judah is Nahshon, the son of Amminadab.