When the Quran was revealed to Prophet Mohammed – peace be on him, his people denied him at the start, and they said to him:
= It is you who have compiled the Quran,
= Had God willed to send an apostle, He would have sent an angel;
= You have studied the past heavenly books and wrote the Quran accordingly;
= You are a poet;
= You are possessed;
= This Quran is from demons and devils, not from God, …etc.
The Arab were eloquent in language: they boast of their ability in eloquency and fluency of language. In addition, they were clever at solving puzzles, and they use some symbols among them that the stranger would not know, but they themselves know. There are many stories about this.
Therefore, God – be glorified – challenged them to bring about one soora or chapter like the Muhkam (or the plain straight forward) Quranic revelations, with the same eloquence; because the Glorious Quran is very eloquent, that influenced its listening so much like magic. He said to them: Mohammed is an Arab like you, then do like him, if it is true that he wrote the Quran, as you claim. But they were completely unable to do that.
Moreover, He challenged them to solve the puzzles (the similitudes) included in it and to know its secrets. That is because the Arab loved the puzzles, and it was usual in their common language. He means: You are skilful at solving puzzles, then if Mohammed had compiled the Quran, as you claim, then solve the puzzles and know the secrets included in it; because Mohammed is one of you. But they were completely unable to solve its puzzles and know its secrets. Then God – be glorified – said that He will explain to them the secrets and the puzzles, after a long time of respite that He gave to them.
That is because the Quran is superior to their minds, and superior to the generations, and it includes things that will be verified by the science in the future. And "the Quran is an alive and dynamic, and applicable in all generations and centuries till Doomsday".
The implication: God tells them: I shall give you so and so of time to ponder and reflect about My words in the Glorious Quran, and even if all the genie-kind and man-kind cooperate with each other to bring about a book similar to the Quran, they will not be able to do that.
One of the Quranic revelations indicating this is His saying – be glorified – in the Quran 17: 88:
قُل لَّئِنِ اجْتَمَعَتِ الإِنسُ وَالْجِنُّ عَلَى أَن يَأْتُواْ بِمِثْلِ هَذَا الْقُرْآنِ لاَ يَأْتُونَ بِمِثْلِهِ وَلَوْ كَانَ بَعْضُهُمْ لِبَعْضٍ ظَهِيرًا
The explanation: (Say [O Mohammed, to these associaters]: "Even though the whole man-kind and genie-kind [: demon-kind] were to gather together in accordance to produce the like of this Quran, they could not produce its like, even if they aided each other with support.")
Also in the Quran 38: 88
وَلَتَعْلَمُنَّ نَبَأَهُ بَعْدَ حِينٍ
Well, aside from being revisionist, your argument is steeped in belief not in fact.
If Michelangelo challenged all of Europe to produce another David (not just a copy but a great work of similar beauty) they wouldn't have been able to do so in his time. Does that prove his divinity? No it doesn't, it proves he was skilled and talented almost beyond belief.
People can be very talented, unimaginably so, but that doesn't make them divine.
If they couldn't solve it's puzzles or "know its secrets" then the work is pointless. This is yet another pragmatic self-refutation. So who could solve the puzzles? Mohammad and his little henchlings no doubt. What is the point of a puzzle book so convoluted no one can solve its problems except its author? It is exclusively meant to grant the author prominence over people. To assume authority from an imagined deity. Such a thing is a crime.
You argue the people were eloquent and intelligent at the time of Mohammad but from your argument it's obvious this is false. They were unable to see through Mohammad's smoke and mirror show; something that is very easy to do. The more you argue the more you demonstrate this.
The people were also deeply steeped in superstition as is obvious from Mohammad's insistence on referring to creatures of the imagination such as demon-kings, demons, jinn and angles. Instead of bringing knowledge to people he was using their own weaknesses against them! He supported their superstition and not with reason but with ludicrous poetry and violence!
As for his last argument that no one could bring about as convoluted and despicable book as he himself had brought: I should point out to you that two people did in fact do just such a thing: the Bab and Baha'ullah. They were able to confound and confuse many people too with their works of plagiarisms and pandering to superstition. If your argument has any weight at all, or if your even remotely sincere, then surely you would turn to them too; for they write the exact same kind of poetry and trash literature.
The human species is capable of generating remarkable talent but this requires time. Unfortunately such individuals are a rarity. It does happen a good deal more often than we know, however, but thankfully most such people aren't so egotistical as to claim they are from god or their message divine. Such a distinction is held for the most despicable of our species of which your "profit" is a prime example.
Imagine if Einstein, Whitehouse, Jung, Sigmund Fraeud, Aristotle, Galileo, Dawkins, to name just a few, had used their considerable intellects to befuddle the masses and gain personal power? Rallied armies to slay those that opposed them? What then would the result have been? They would have produced books that confused, were puzzling and full of superstition! Instead they have enlightened mankind, brought books and theories that have added clarity to our world not enhanced its confusion. They bring new ideas and concepts not play on peoples ignorance. They bring real world truth and enlightenment. They do so without being confounding; they do so without being confusing and they do so for the good of man not for their own personal gain!
He was right about one thing, that after time people would come to know the truth about him: he is a lier, a cheat, a murderer, a prostitute of the arts, an ego maniac, and deceiver. His vacant teachings have not enhanced the worlds understanding on one thing even to the smallest degree, but only served to be the fuel for war, hatred and misery. In short good sir your prophet Mohammad is less than a two bit *****; I feel it is an injustice to myself, to you, and anyone around me to call Mohammad anything but what he really is ( I mean no offense to two bit *****s).