وَمَا جَعَلْنَآ أَصْحَـٰبَ ٱلنَّارِ إِلَّا مَلَـٰٓئِكَةً ۙ وَمَا جَعَلْنَا عِدَّتَهُمْ إِلَّا فِتْنَةً لِّلَّذِينَ كَفَرُوا۟ لِيَسْتَيْقِنَ ٱلَّذِينَ أُوتُوا۟ ٱلْكِتَـٰبَ وَيَزْدَادَ ٱلَّذِينَ ءَامَنُوٓا۟ إِيمَـٰنًا ۙ وَلَا يَرْتَابَ ٱلَّذِينَ أُوتُوا۟ ٱلْكِتَـٰبَ وَٱلْمُؤْمِنُونَ ۙ وَلِيَقُولَ ٱلَّذِينَ فِى قُلُوبِهِم مَّرَضٌ وَٱلْكَـٰفِرُونَ مَاذَآ أَرَادَ ٱللَّهُ بِهَـٰذَا مَثَلًا ۚ كَذَٰلِكَ يُضِلُّ ٱللَّهُ مَن يَشَآءُ وَيَهْدِى مَن يَشَآءُ ۚ وَمَا يَعْلَمُ جُنُودَ رَبِّكَ إِلَّا هُوَ ۚ وَمَا هِىَ إِلَّا ذِكْرَىٰ لِلْبَشَرِ
wamā jaʿalnā aṣḥāba l-nāri illā malāikatan wamā jaʿalnā ʿiddatahum illā fit'natan lilladhīna kafarū liyastayqina alladhīna ūtū l-kitāba wayazdāda alladhīna āmanū īmānan walā yartāba alladhīna ūtū l-kitāba wal-mu'minūna waliyaqūla alladhīna fī qulūbihim maraḍun wal-kāfirūna mādhā arāda l-lahu bihādhā mathalan kadhālika yuḍillu l-lahu man yashāu wayahdī man yashāu wamā yaʿlamu junūda rabbika illā huwa wamā hiya illā dhik'rā lil'bashari
And We have not made the keepers of the Fire except angels. And We have not made their number except as a trial for those who disbelieve - that those who were given the Scripture will be convinced and those who have believed will increase in faith and those who were given the Scripture and the believers will not doubt and that those in whose hearts is disease [i.e., hypocrisy] and the disbelievers will say, "What does Allāh intend by this as an example?" Thus does Allāh send astray whom He wills and guide whom He wills. And none knows the soldiers of your Lord except Him. And it [i.e., mention of the Fire] is not but a reminder to humanity.
— Saheeh International
none other than angels appointed by Us to guard Hellfire- and We have made their number a test for the disbelievers. So those who have been given the Scripture will be certain and those who believe will have their faith increased: neither those who have been given the Scripture nor the believers will have any doubts, but the sick at heart and the disbelievers will say, ‘What could God mean by this description?’ God leaves whoever He will to stray and guides whoever He will- no one knows your Lord’s forces except Him- this [description] is a warning to mortals.
— M. A. S. Abdel Haleem
And We have set none but angels as guardians of the Fire. And We have fixed their number (19) only as a trial for the disbelievers, in order that the people of the Scripture (Jews and Christians) may arrive at a certainty [that this Qur’ân is the truth as it agrees with their Books regarding the number (19) which is written in the Taurât (Torah) and the Injeel (Gospel)] and that the believers may increase in Faith (as this Qur’ân is the truth), and that no doubt may be left for the people of the Scripture and the believers, and that those in whose hearts is a disease (of hypocrisy) and the disbelievers may say: "What Allâh intends by this (curious) example ?" Thus Allâh leads astray whom He wills and guides whom He wills. And none can know the hosts of your Lord but He. And this (Hell) is nothing else than a (warning) reminder to mankind.
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali