Fourteen centuries ago, Allah sent down the Quran. This book of guidance and wisdom calls man to the truth and instructs all human beings to adhere to the values which this mighty revelation contains. From the day of its revelation to the Day of Judgement, this last divine book will remain as the sole guide for humanity. The book of Allah states, "But it is nothing less than a Reminder to all the worlds." (Qur'an, 68:52). Allah's Miracles in the Quran - An Introduction.