Joshua 7:13

7:13 Get up! Ritually consecrate the people and tell them this: ‘Ritually consecrate yourselves for tomorrow, because the Lord God of Israel says, “You are contaminated, O Israel! You will not be able to stand before your enemies until you remove what is contaminating you.”

Joshua 8:14

8:14 When the king of Ai saw Israel, he and his whole army quickly got up the next day and went out to fight Israel at the meeting place near the Arabah. But he did not realize men were hiding behind the city.