Joshua 18:8-12

Then the men arose and went, and Joshua commanded those who went to write a description of the land, saying, “Go and walk through the land and write a description of it, and return to me; then I will cast lots for you here before the Lord in Shiloh.”

So the men went and passed through the land, and wrote a description of it by cities in seven divisions in a book; and they came to Joshua at the camp at Shiloh.

Joshua then cast lots for them in Shiloh before the Lord, and there Joshua divided the land for the sons of Israel according to their divisions. The Territory of Benjamin

Now the lot of the tribe of the sons of Benjamin came up according to their families, and the territory of their lot lay between the sons of Judah and the sons of Joseph.

Their border on the north side was from the Jordan, then the border went up to the side of Jericho on the north, and went up through the hill country westward, and it ended at the wilderness of Beth-aven.