Joshua 8:9, 17
Joshua 8:9 NASB1995
So Joshua sent them away, and they went to the place of ambush and remained between Bethel and Ai, on the west side of Ai; but Joshua spent that night among the people.
Joshua 8:17 NASB1995
So not a man was left in Ai or Bethel who had not gone out after Israel, and they left the city unguarded and pursued Israel.