Speak to the people of Israel, saying: When anyone sins unintentionally in any of the Lord's commandments about things not to be done, and does any one of them:
These six cities shall serve as refuge for the Israelites, for the resident or transient alien among them, so that anyone who kills a person without intent may flee there.
The towns that you give to the Levites shall include the six cities of refuge, where you shall permit a slayer to flee, and in addition to them you shall give forty-two towns.
to which a homicide could flee, someone who unintentionally kills another person, the two not having been at enmity before; the homicide could flee to one of these cities and live: