Numbers 35:9

6 `And the cities which ye give to the Levites [are] the six cities of refuge, which ye give for the fleeing thither of the man-slayer, and besides them ye give forty and two cities;

7 all the cities which ye give to the Levites [are] forty and eight cities, them and their suburbs.

8 And the cities which ye give [are] of the possession of the sons of Israel, from the many ye multiply, and from the few ye diminish; each, according to his inheritance which they inherit, doth give of his cities to the Levites.`

10 `Speak unto the sons of Israel, and thou hast said unto them, When ye are passing over the Jordan to the land of Canaan,

11 and have prepared to yourselves cities -- cities of refuge they are to you -- then fled thither hath a man-slayer, smiting a person unawares,

12 and the cities have been to you for a refuge from the redeemer, and the man-slayer doth not die till his standing before the company for judgment.