The Koran is the sacred text of Islam. For Muslims, the Koran, as it is read today, represents the message revealed fourteen centuries ago by God to Mohammed through an angelic channel strating from December 22nd 609 and destined to every human being on Earth.
It is He who created for you everything on earth, then turned to the heaven, and made them seven heavens. And He is aware of all things.
Al-Qurʾān (II Al-Baqara, 29)