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.
I did not make the wardens of the Fire except angels, so humans do not have the power to face them. Abu Jahl was lying when he and his people claimed that they have the ability to attack them and then they will come out of the Fire. I did not make this number of theirs except to test those who reject Allah, so that the Jews who were given the Torah and the Christians who were given the Gospel will become certain when the Qur’ān that confirms what is in their scriptures is revealed, so that the faith of the believers increases when the people of the scripture agree with them and the Jews, Christians and the believers do not have any doubt, and so that those who waver in faith and those who are disbelievers say: What does Allah intend by this strange number?! Just as those who deny this number are misguided and those who accept it are guided, Allah misguides whoever He wishes to misguide and He guides whoever He wishes to guide. No one knows the forces of your Lord, because of their huge number, besides Him, may He be glorified. So let Abu Jahl who, mockingly and dismissively, said, “Does Muhammad only have nineteen aides?!” know this. The Fire is only a reminder for human beings, through which they can come to know of Allah’s greatness, may He be glorified.