They declared, “O our fellow jinn! We have truly heard a scripture revealed after Moses, confirming what came before it. It guides to the truth and the Straight Way.
The Holy Quran is Allah's guidance to the world, but it will not be revealed to every individual nor will a copy fly to every person, and if it did not everyone will just pick it up and start reading it on their own (language, level, etc.). There is a key component to delivering this critical message; it's You.
You are connected to others and can relate to them, you have the opportunity, or rather the duty, to deliver the message.