«We have not appointed the guards of hell, except angels; and did not keep this number except to test the disbelievers – in order that the People given the Book(s) may be convinced, and to increase the faith of the believers – and so that the People given the Book(s) and the Muslims may not have any doubt – and so that those in whose hearts is a disease and the disbelievers, may say, “What does Allah mean by this amazing example?” This is how Allah sends astray whomever He wills, and guides whomever He wills; and no one knows the armies of Allah except Him; and this is not but an advice to man.»