Joshua 18:4-6

4Pick out from among you three men for each tribe, and I will send them; they shall rise and go through the land, survey it according to their inheritance, and come back to me.

5And they shall divide it into seven parts. Judah shall remain in their territory on the south, and the house of Joseph shall remain in their territory on the north.

6You shall therefore survey the land in seven parts and bring the survey here to me, that I may cast lots for you here before the Lord our God.