بِسْمِ اللّٰهِ الرَّحْمٰنِ الرَّح۪يمِ
74:31 "We have appointed only angels as guardians of the Fire, and We have made their number (nineteen) a trial for the disbelievers, to convince those who have been given the Book, to strengthen the faith of those who believe, to remove the doubts of those who have been given the Book and those who believe, and for those in whose hearts is a disease and the disbelievers to say, "What does Allah mean by this example?"So Allah leads astray whom He wills and guides whom He wills. None knows the armies of your Lord except Himself. This (number) is a message to the people."