Read Joshua 11:11 Using Other Translations
And they smote all the souls that were therein with the edge of the sword, utterly destroying them: there was not any left to breathe: and he burnt Hazor with fire.
And they struck with the sword all who were in it, devoting them to destruction;there was none left that breathed. And he burned Hazor with fire.
The Israelites completely destroyed every living thing in the city, leaving no survivors. Not a single person was spared. And then Joshua burned the city.