Joshua 7:3-5

3And they returned to Joshua, and said to him, Let not all the people go up; but let about two or three thousand men go up and smite Ai; and make not all the people to labour there; for they are but few.1 4So there went up there from the people about three thousand men: and they fled before the men of Ai. 5And the men of Ai smote of them about thirty and six men: for they chased them from before the gate even to Shebarim, and smote them in the going down: therefore the hearts of the people melted, and became as water.2