The Quran is the Book of God. It has been preserved in its entirety for all time to come. In the present book, The Quran: An Abiding Wonder, Maulana Wahiduddin Khan, briefly discusses two aspects of the Quran: firstly, its being in itself a proof that it is the Book of God; secondly its complete preservation in its original form, as revealed to the Arab Prophet Muhammad in the seventh century Hijrah. The perfect state of preservation singles out the Quran from its predecessors as a unique vehicle for divine guidance and salvation. Due to its preservation, it is a book that will retain its validity until the Day of Judgment. Apart from this fact, the author discusses the Quran in itself being a proof that it is the Book of God.