Adam Clarke on Joshua 7:11

Israel hath sinned - It is impossible that God should turn against his people, if they had not turned away from him. They have taken of the accursed thing, notwithstanding my severe prohibition. They have also stolen, supposing, if not seen by their brethren, I should either not see or not regard it. They have dissembled - pretended to have kept strictly the command I gave them; and have put it among their own stuff - considered it now as a part of their own property.