The Qur’ān is God’s miraculous, matchless message that has been sent to all humanity via His last Messenger. With the Qur’an, God has shown humanity, one last time, a short-cut to His good pleasure. He has communicated to us about His Essence, Attributes, and Names. He has expressed in the most explicit way, leaving no room for any misunderstanding, His will to be known and recognized in the correct way, to be believed in and worshipped. Almighty God has put emphasis on the duties and responsibilities of believers, while enthusing hearts and agitating souls with His promise for punishment and reward. He has presented the Qur’ān as a sign for perfection and completion and as an orbit to rotate around for His good pleasure, while condescending to offer this gift to us as a compliment greater than any that has been or will ever be granted to anyone else.
Source : http://www.mquran.org