Deuteronomy 19:6-8

Common English Bible

⁶ Otherwise, the blood avenger will chase after the killer out of rage and—especially if the distance to one of these cities^[a] is too far—might catch and kill him, even though a death sentence was not in order because the killer didn’t have prior malice toward the other. ⁷ This is why I am commanding you as follows: Designate three cities for your use.

⁸ Now if the Lord your God enlarges your territory, as he swore to your ancestors—and he will give you all the land he swore to give to them