This is the best of the land and must not pass into other hands, because it is holy to the Lord

Ezekiel 48:1-20

These are the tribes, listed by name: At the northern frontier, Dan will have one portion; it will follow the Hethlon road to Lebo Hamath; Hazar Enan and the northern border of Damascus next to Hamath will be part of its border from the east side to the west side.

Bordering the territory of Judah from east to west will be the portion you are to present as a special gift. It will be 25,000 cubits wide, and its length from east to west will equal one of the tribal portions; the sanctuary will be in the center of it.

The special portion you are to offer to the Lord will be 25,000 cubits long and 10,000 cubits wide. This will be the sacred portion for the priests.

Alongside the territory of the priests, the Levites will have an allotment 25,000 cubits long and 10,000 cubits wide. Its total length will be 25,000 cubits and its width 10,000 cubits. They must not sell or exchange any of it. This is the best of the land and must not pass into other hands, because it is holy to the Lord.

The remaining area, 5,000 cubits[c] wide and 25,000 cubits long, will be for the common use of the city, for houses and for pastureland.

The workers from the city who farm it will come from all the tribes of Israel. The entire portion will be a square, 25,000 cubits on each side. As a special gift you will set aside the sacred portion, along with the property of the city.

Why?
There are 13 portions in the Promised Land, the sanctuary is located in the territory of Judah, so Judah is the center tribe of Israelites.

The territory of Levites could not be sold or passed into other hands, because it is holy to the Lord.

How?

We have to isolate the portion that belongs to the Lord, our life, our property, and our wisdom. I belong to the Lord. God is my shepherd I am a lamb in His pasture.