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Surah 33. Al-Ahzab
Ayah 9 - 11
9 يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ ٱذْكُرُوا۟ نِعْمَةَ ٱللَّهِ عَلَيْكُمْ إِذْ جَآءَتْكُمْ جُنُودٌ فَأَرْسَلْنَا عَلَيْهِمْ رِيحًا وَجُنُودًا لَّمْ تَرَوْهَا ۚ وَكَانَ ٱللَّهُ بِمَا تَعْمَلُونَ بَصِيرًا
10 إِذْ جَآءُوكُم مِّن فَوْقِكُمْ وَمِنْ أَسْفَلَ مِنكُمْ وَإِذْ زَاغَتِ ٱلْأَبْصَـٰرُ وَبَلَغَتِ ٱلْقُلُوبُ ٱلْحَنَاجِرَ وَتَظُنُّونَ بِٱللَّهِ ٱلظُّنُونَا۠
11 هُنَالِكَ ٱبْتُلِىَ ٱلْمُؤْمِنُونَ وَزُلْزِلُوا۟ زِلْزَالًا شَدِيدًا
[9-11] O people18 who have believed! Remember the bounty of Allah, which He has (just now) shown you. When the hosts came down on you, We sent against them a violent wind and the armies which you could not see.19 Allah was watching all that you were doing. When the enemies came upon you from above and from below you?20 when eyes were petrified due to fear and the hearts leapt up to the throats, and you began to entertain all sorts of doubts about Allah, the believers then were thoroughly tested and severely shaken.21
18In vv. 9-27 an appraisal has been made of the Battle of the Trench and the raid against the Bani Quraizah and were revealed at the end of the raid. One should keep the details of these events in view as given in the Introduction above.
19The windstorm did not lash the enemy hordes immediately on their arrival but it occurred when the siege of Madinah had lasted about a month. "Armies which you could not see" implies the hidden powers which operate in the affairs of men under Allah's Command and of which men are wholly unaware. Man regards the occurrence of events and incidents as resulting from apparent causes and does not take into account the hidden forces at work, whereas in most cases these very hidden forces play the decisive role. As these forces function under the Command of Allah's angels, the "armies" may imply the angels as well though there is no indication here of sending the armies of the angels.
20It may mean: "The enemies came upon you from every side, and also that those coming from Najd and Khaiber came from above and those coming from Makkah from below you."
21"The believers" : All those who accepted the Holy Prophet as Allah's Messenger and became included among his followers, which comprised both the true believers and the hypocrites. In this paragraph Allah has made mention of the Muslim community as a whole. In the following three paragraphs the attitude of the hypocrites has been commented upon, and the next two deal with the Holy Prophet and the true believers.