Concept:Israel’s defeat was caused by hidden sin, not military weakness.
Explanation:After the victory at Jericho, God commanded that all spoils be devoted to Him.
Achan secretly took an accursed thing — a beautiful Babylonian garment, silver, and gold.
Because of this disobedience, God withdrew His protection from Israel.
When Israel attacked the small city of Ai, they were routed.
Joshua later discovered the sin through divine revelation, and Achan confessed.
Thus, the defeat happened because someone stole an accursed thing.
Answer:C. someone stole an accursed thing