Deuteronomy 20:11-13

New Century Version

¹¹ If they accept your offer and open their gates to you, all the people of that city will become your slaves and work for you. ¹² But if they do not make peace with you and fight you in battle, you should surround that city. ¹³ The Lord your God will give it to you. Then kill all the men with your swords,