Numbers 35:4-6

Darby Translation

⁴ And the suburbs of the cities that ye shall give unto the Levites shall be from the walls of the city outward, a thousand cubits round about.

⁵ And ye shall measure, without the city, the east side two thousand cubits, and the south side two thousand cubits, and the west side two thousand cubits, and the north side two thousand cubits, and the city shall be in the midst: they shall have this as suburbs of the cities.

⁶ And [among] the cities that ye shall give unto the Levites [shall be] the six cities of refuge, which ye shall appoint for the manslayer, that he may flee thither,—and besides them ye shall give forty-two cities: