Joshua 7:12-13

12This is why the Israelites cannot stand against their enemies. They will turn their backs and run from their enemies, because they themselves have been set apart for destruction. I will no longer be with you unless you remove from among you whatever is devoted to destruction.

13Get up and consecrate the people, saying, ‘Consecrate yourselves for tomorrow, for this is what the LORD, the God of Israel, says: Among you, O Israel, there are things devoted to destruction. You cannot stand against your enemies until you remove them.