Deuteronomy 19:10

⁸And if the Lord shall enlarge thy borders, as he swore to thy fathers, and the Lord shall give to thee all the land which he said he would give to thy fathers;

⁹if thou shalt hearken to do all these commands, which I charge thee this day, to love the Lord thy God, to walk in all his ways continually; thou shalt add for thyself yet three cities to these three.

— Deuteronomy 19:10 —

¹¹But if there should be in thee a man hating his neighbor, and he should lay wait for him, and rise up against him, and smite him, that he die, and he should flee to one of these cities,

¹²then shall the elders of his city send, and take him thence, and they shall deliver him into the hands of the avengers of blood, and he shall die.