Deuteronomy 20:10-15

10“When you go near a city to fight against it, call out shalom to it.

11Now if it answers you shalom and opens up to you, then all the people found in it will serve you as forced laborers.

12If it does not make peace with you but makes war against you, then lay siege against that city.

13When Adonai your God hands it over to you, you are to strike all its males with the sword.

14Only the women, children, livestock and all that is in the city—all its spoil—may you take as plunder for yourself. So you may consume your enemies’ spoil, which Adonai your God has given you.

15Thus you will do to all the cities that are very distant from you, which are not among the towns of these nations nearby.