Joshua 8:1, 18-19, 24-27

8 Then the Lord said to Joshua, “Do not be afraid; do not be discouraged. Take the whole army with you, and go up and attack Ai. For I have delivered into your hands the king of Ai, his people, his city and his land. 

¹⁸ Then the Lord said to Joshua, “Hold out toward Ai the javelin that is in your hand, for into your hand I will deliver the city.” So Joshua held out toward the city the javelin that was in his hand. ¹⁹ As soon as he did this, the men in the ambush rose quickly from their position and rushed forward. They entered the city and captured it and quickly set it on fire.

²⁴ When Israel had finished killing all the men of Ai in the fields and in the wilderness where they had chased them, and when every one of them had been put to the sword, all the Israelites returned to Ai and killed those who were in it. ²⁵ Twelve thousand men and women fell that day—all the people of Ai. ²⁶ For Joshua did not draw back the hand that held out his javelin until he had destroyed all who lived in Ai. ²⁷ But Israel did carry off for themselves the livestock and plunder of this city, as the Lord had instructed Joshua.