Joshua 7:2-4
And Joshua sent men from Jericho to Ai, which is beside Bethaven, on the east of Bethel, and spoke to them, saying, Go up and view the country. And the men went up and viewed Ai.
Torrey's Topical Textbook—AKJV

Joshua 8:1-19
And the LORD said to Joshua, Fear not, neither be you dismayed: take all the people of war with you, and arise, go up to Ai: see, I have given into your hand the king of Ai, and his people, and his city, and his land:
Torrey's Topical Textbook—AKJV