No one who hadn’t gone out after Israel was left in either Ai or Bethel. They left the city wide open and chased after Israel.
And there was not a man left in Ai or Beth-el, that went not out after Israel: and they left the city open, and pursued after Israel.
Not a man was left in Ai or Bethel who did not go out after Israel. Leaving the city open, they pursued Israel.
and indeed not one remained in the city of Ai and of Bethel who did not pursue after Israel, (leaving the towns open after they had rushed out,)