Joshua 8:12 WEB

¹⁰  Joshua arose up early in the morning, and mustered the people, and went up, he and the elders of Israel, before the people to Ai.

¹¹  All the people, [even] the [men of] war who were with him, went up, and drew near, and came before the city, and encamped on the north side of Ai: now there was a valley between him and Ai.

¹²  He took about five thousand men, and set them in ambush between Bethel and Ai, on the west side of the city.

¹³  So they set the people, even all the host who was on the north of the city, and their liers-in-wait who were on the west of the city; and Joshua went that night into the midst of the valley.

¹⁴  It happened, when the king of Ai saw it, that they hurried and rose up early, and the men of the city went out against Israel to battle, he and all his people, at the time appointed, before the Arabah; but he didn't know that there was an ambush against him behind the city.