Deuteronomy 19:2-4

New Life Version

² you should set apart three cities for yourself in the land the Lord your God gives you for your own. ³ Make the roads good that lead to these cities. Divide into three parts the land the Lord your God gives you for your own. Any man who kills another may run to a city and be safe.

⁴ “This is the law of the person who kills another and runs to a city to save his life. He might have killed his friend without meaning to, a friend he did not hate in the past.