We assigned none but angels to be wardens of the Fire and We made the amount of them not but as a test for those who were ungrateful. So those who were given the Book are reassured and those who believed, add to their belief. And will not doubt those who were given the Book and the ones who believe. And say to those who in their hearts is a sickness and the ones who are ungrateful: What had God wanted by this example? Thus, God causes to go astray whom He wills, and He guides whom He wills. And none knows the armies of thy Lord but He. And it is not other than a reminder for the mortals.