Numbers 35:11-13

King James Version

¹¹ Then ye shall appoint you cities to be cities of refuge for you; that the slayer may flee thither, which killeth any person at unawares.

¹² And they shall be unto you cities for refuge from the avenger; that the manslayer die not, until he stand before the congregation in judgment.

¹³ And of these cities which ye shall give six cities shall ye have for refuge.