Numbers 35:12 KJV

10Speak unto the children of Israel, and say unto them, When ye be come over Jordan into the land of Canaan;

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

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

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

14Ye shall give three cities on this side Jordan, and three cities shall ye give in the land of Canaan, which shall be cities of refuge.