The Israelites put everyone in Hazor to the sword, devoting them to destruction. Nothing that breathed remained, and Joshua burned down Hazor itself.
KJV
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.
ASV
And they smote all the souls that were therein with the edge of the sword, utterly destroying them; there was none left that breathed: and he burnt Hazor with fire.