We know that the Divine mission of prophethood is a great rank endowed upon some of the purified distingished members of the human race. Since the purpose of prophethood is the comprehensive guidance ruling over the body and spirit of individuals, and society, toward perfection and the laying down of a legal system and social order for mankind, the assumption of responsibility involved is necessarily heavy and taxing. So, it requires great capacity and energy. Allah, therefore, bestows the position of prophethood on those who have the ability and capacity to receive and follow through the light of revelation. This unique privilege and speciality of prophets is also shown in their miracles, which all of them had. And, to prevent some false, deceitful impostors from claiming the position, it is necessary that, besides the revelation, the real ones should have sufficient evidence to bear testimony to the truth of their declaration and prove the claim that they are sent by Allah. That is, a prophet should utter such words and exhibit such deeds which could not be uttered or performed by any natural means within the power of a finite being, such as : restoring the dead to life again, communicating with animals and inanimate bodies, and the likes of them. These supernatural events are termed as miracles.
The prophet who has a miracle should introduce it to people and invite them to challenge with it. If they can produce none similar to that, thus, by the means of his miracle, he proves the truthfulness of his declaration.
The Holy Qur'an, The Everlasting Miracle of the Prophet of Islam(p.b.u.h.)!
Amongst the miracles issued by the Prophet of Islam (p.b.u.h.), the Qur'an is the best remaining evidence of his rightfulness. We know, of course, that, according to what the leading scholars of Islam have said, he (p.b.u.h.) had about 4440 miracles. But the Qur'an is a Book beyond the thoughts and mind of a mortal being. None has been able to bring one similar to it yet. It is a great heavenly miracle.
The reason that amongst all the miracles of the Messenger of Allah (p.b.u.h.) the Qur'an has been chosen as the greatest remaining evidence of legitimacy of the Prophet of Islam (p.b.u.h.) is that it is a miracle which is 'expressive', 'everlasting', 'world-wide', and 'spiritual'.
Each of the former prophets (a.s.) had to accompany his miracle to prove its inimitability when he used to invite his opponents for challenging and bringing the like of it. In fact, his miracle or miracles could not express themselves and it was the explanations of the prophet that would complete them. This statement is also true for all the miracles of the Prophet of Islam (p.b.u.h.) except the Holy Qur'an.
The Qur'an is a clear miracle which need not be introduced. It invites others to itself, demands the rejecters to challenge it while it defeats them, condemns them, and it always stands victorious. That is why it, after passing centuries, viz., since the departure of the Prophet (p.b.u.h.) up to the present, has been continuing its invitation the same as it did during his lifetime (p.b.u.h). It is both religion and miracle; law, and the document of the law.
source : http://www.maaref-foundation.com
