Deuteronomy 20:10-15

10When you approach a city to attack it, offer its people a peaceful way to surrender.

11If they accept it and open ⌞their gates⌟ to you, then all the people there will be made to do forced labor and serve you.

12If they won’t accept your offer of peace but declare war on you, set up a blockade around the city.

13When the Lord your God hands the city over to you, kill every man in that city with your swords.

14But take the women and children, the cattle and everything else in the city, including all its goods, as your loot. You may enjoy your enemies’ goods that the Lord your God has given you.

15This is what you must do to all the cities that are far away which don’t belong to the nations nearby.