Numbers 34:16

for the tribe of the children of Reuben according to their fathers' houses, and the tribe of the children of Gad according to their fathers' houses, have received, and the half-tribe of Manasseh have received, their inheritance:

the two tribes and the half-tribe have received their inheritance beyond the Jordan at Jericho eastward, toward the sunrise.

These are the names of the men who shall divide the land to you for inheritance: Eleazar the priest, and Joshua the son of Nun.

You shall take one prince of every tribe, to divide the land for inheritance.