18. In( Ayats 9-27), an appraisal has been made of the battle of the Trench and the raid against the Bani Quraizah. These were revealed at the end of the raid. One should keep the details of these events in view as given in the introduction above.
19. The windstorm did not lash the enemy forces immediately on their arrival but it occurred while the siege of Al-Madinah had lasted about a month. “Armies whom you did not see” implies the hidden powers which operate in the affairs of men under Allah’s command and of which men are totally 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.
20. It 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 Prophet (peace be upon him) 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 Prophet (peace be upon him) and the true believers.