“The cities which you shall give to the Levites, they shall be the six cities of refuge, which you shall give for the man slayer to flee to. Besides them you shall give forty-two cities.
These were the appointed cities for all the children of Israel, and for the alien who lives amongst them, that whoever kills any person unintentionally might flee there, and not die by the hand of the avenger of blood, until he stands trial before the congregation.