Deuteronomy 19:1-3

KJ2000(i) 1 When the LORD your God has cut off the nations, whose land the LORD your God gives you, and you dispossess them, and dwell in their cities, and in their houses; 2 You shall set apart three cities for you in the midst of your land, which the LORD your God gives you to possess it. 3 You shall prepare you a way, and divide the territory of your land, which the LORD your God gives you to inherit, into three parts, that every manslayer may flee there.