Numbers 34:14-18

For the tribe of the sons of Reuben have received theirs according to their fathers’ households, and the tribe of the sons of Gad according to their fathers’ households, and the half-tribe of Manasseh have received their possession.

The two and a half tribes have received their possession across the Jordan opposite Jericho, eastward toward the sunrise.”

Then the Lord spoke to Moses, saying,

“These are the names of the men who shall assign the land to you as an inheritance: Eleazar the priest, and Joshua the son of Nun.

And you shall take one leader of each tribe to assign the land as an inheritance.