Joshua 18:4-6

4Appoint for yourselves three men from each tribe, and I will send them, and they will arise and walk through the land, and describe it according to their inheritance, and then return to me.

5They are to divide it into seven portions: Judah will remain within its territory in the south, and the house of Joseph will remain within their territory in the north.

6After you have described the seven portions of land, bring the description here to me. Then I will cast lots for you here before Adonai our God.