Joshua 8:3-5

Amplified Bible

³ So Joshua set out with all the people of war to go up against Ai; then Joshua chose thirty thousand valiant men, and sent them out at night. ⁴ He commanded them, saying, “Listen closely, you are going to lie in wait and ambush the city from behind it. Do not go very far away from the city, but all of you be ready. ⁵ Then I and all the people who are with me will approach the city. And when they come out to meet us [for battle] as [they did] the first time, we will run away from them.