We have appointed only angels to be masters of the Fire, and their number We have appointed only as a trial for the unbelievers, that those who were given the Book may have certainty, and that those who believe may increase in belief, and that those who were given the Book and those who believe may not be in-doubt, and that those in whose hearts there is sickness, and the unbelievers, may say, 'What did God intend by this as a similitude?' So God leads astray whomsoever He will, and He guides whomsoever He will; and none knows the hosts of thy Lord but He. And it is naught but a Reminder to mortals.