Deuteronomy 20:13

Tree of Life Version

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

See the chapter Copy

A psalm of David. Adonai declares to my Lord: “Sit at My right hand until I make your enemies a footstool for Your feet.”

But those hostile to me, who didn’t want me to reign over them, bring them here and execute them before me.’”

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