﴿ وَأَنَّا لَا نَدْرِىٓ أَشَرٌّ أُرِيدَ بِمَن فِى ٱلْأَرْضِ أَمْ أَرَادَ بِهِمْ رَبُّهُمْ رَشَدًۭا ﴾

“"'And [now we have become aware] that we [created beings] may not know whether evil fortune is intended for [any of] those who live on earth, or whether it is their Sustainer’s will to endow them with consciousness of what is right:”

The jinn who heard the Quran not only accepted it immediately, but also became its propagators. This shows that whenever a true discourse reaches the ears of living people, it creates a two-fold effect—first, an open-hearted admission of its truth and second, a willingness to propagate its teachings.