Joshua 7:12-13

12And the children of Israel shall not be able to stand before their enemies: they shall turn their backs before their enemies, for they have made themselves accursed. I will no more be with you, except ye destroy the accursed thing from your midst.

13Rise up, hallow the people, and say, Hallow yourselves for to-morrow; for thus saith Jehovah the 1God of Israel, There is an accursed thing in the midst of thee, Israel: thou shalt not be able to stand before thine enemies, until ye take away the accursed thing from your midst.