
The Holy Quran comes in the form of a book. In fact, God has given us several Books of guidance through the years, but each one was ultimately corrupted and changed by people. Each Book essentially contained the same fundamental message as the previous Books. Mankind was expected to guard these Books from harm, but unfortunately failed to live up to this expectation. Slowly but surely, each Book was edited and tampered with, destroying its authenticity. This is partly why God kept sending us more revelations.
However 1400 years ago, God sent us another Book with the same basic message as the earlier ones, but with a small but very important difference. This time, God decreed that this Book would be the last Book sent down to us because God would protect it Himself. Regarding this Final Book, God said,