Joshua 7:2-5

Now Joshua sent men from Jericho to Ai, which is near Beth-aven, east of Bethel, and said to them, “Go up and spy out the land.” So the men went up and spied out Ai. They returned to Joshua and said to him, “Do not let all the people go up; only about two or three thousand men need go up to Ai; do not make all the people toil up there, for they are few.” So about three thousand men from the people went up there, but they fled from the men of Ai. The men of Ai struck down about thirty-six of their men, and pursued them from the gate as far as Shebarim and struck them down on the descent, so the hearts of the people melted and became as water.