Numbers 35:12-19

12And ye shall have these cities for refuge from the avenger; that the manslayer die not, until he have stood before the assembly in judgment.

13And the cities that ye shall give shall be six cities of refuge for you.

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

15For the children of Israel, and for the stranger, and for the sojourner among them shall these six cities be a refuge, that one who smiteth a person mortally without intent may flee thither.

16And if he have smitten him with an instrument of iron, so that he die, he is a murderer: the murderer shall certainly be put to death.

17And if he have smitten him with a stone from the hand, wherewith one may die, and he die, he is a murderer: the murderer shall certainly be put to death.

18Or if he have smitten him with an instrument of wood, in the hand, wherewith one may die, and he die, he is a murderer: the murderer shall certainly be put to death;

19the avenger of blood, he shall put the murderer to death; when he meeteth him, he shall put him to death.