Numbers 35:4-6

21st Century King James Version

⁴ And the suburbs of the cities, which ye shall give unto the Levites, shall reach from the wall of the city and outward a thousand cubits round about.

⁵ And ye shall measure from outside the city on the east side two thousand cubits, and on the south side two thousand cubits, and on the west side two thousand cubits, and on the north side two thousand cubits; and the city shall be in the midst. This shall be to them the suburbs of the cities.

⁶ And among the cities which ye shall give unto the Levites there shall be six cities for refuge which ye shall appoint for the manslayer, that he may flee thither; and to them ye shall add forty and two cities.