Al Muddaththir Ayah 31

وَمَا جَعَلْنَآ أَصْحَـٰبَ ٱلنَّارِ إِلَّا مَلَـٰٓئِكَةً‌ۙ وَمَا جَعَلْنَا عِدَّتَهُمْ إِلَّا فِتْنَةً لِّلَّذِينَ كَفَرُواْ لِيَسْتَيْقِنَ ٱلَّذِينَ أُوتُواْ ٱلْكِتَـٰبَ وَيَزْدَادَ ٱلَّذِينَ ءَامَنُوٓاْ إِيمَـٰنًا‌ۙ وَلَا يَرْتَابَ ٱلَّذِينَ أُوتُواْ ٱلْكِتَـٰبَ وَٱلْمُؤْمِنُونَ‌ۙ وَلِيَقُولَ ٱلَّذِينَ فِى قُلُوبِهِم مَّرَضٌ وَٱلْكَـٰفِرُونَ مَاذَآ أَرَادَ ٱللَّهُ بِهَـٰذَا مَثَلاً‌ۚ كَذَٲلِكَ يُضِلُّ ٱللَّهُ مَن يَشَآءُ وَيَهْدِى مَن يَشَآءُ‌ۚ وَمَا يَعْلَمُ جُنُودَ رَبِّكَ إِلَّا هُوَ‌ۚ وَمَا هِىَ إِلَّا ذِكْرَىٰ لِلْبَشَرِ ٣١ We have appointed only ?stern? angels as wardens of the Fire. And We have made their number only as a test for the disbelievers, so that the People of the Book will be certain, and the believers will increase in faith, and neither the People of the Book nor the believers will have any doubts, and so that those ?hypocrites? with sickness in their hearts and the disbelievers will argue, “What does Allah mean by such a number?” In this way Allah leaves whoever He wills to stray and guides whoever He wills. And none knows the forces of your Lord except He. And this ?description of Hell? is only a reminder to humanity.