Joshua 7:1, 4-5, 10-12

Then the People of Israel violated the holy curse. Achan son of Carmi, the son of Zabdi, the son of Zerah of the tribe of Judah, took some of the cursed things. GOD became angry with the People of Israel.

So three thousand men went up—and then fled in defeat before the men of Ai! The men of Ai killed thirty-six—chased them from the city gate as far as The Quarries, killing them at the descent. The heart of the people sank, all spirit knocked out of them.

GOD said to Joshua, “Get up. Why are you groveling? Israel has sinned: They’ve broken the covenant I commanded them; they’ve taken forbidden plunder—stolen and then covered up the theft, hoarding it up with their own stuff. The People of Israel can no longer look their enemies in the eye—they themselves are plunder. I can’t continue with you if you don’t rid yourselves of the cursed things.