1) Historical accounts document, and the Quran openly declares, that Muhammad (pbuh) was unlettered.
“You (O Muhammad) were not a reader of any Scripture before it, nor did you write (such a Scripture) with your right hand, for then those who follow falsehood might (have a right) to doubt it.”[Quran,29.48]
2) The Quran was revealed at a time when the Arabs excelled in oral poetry. Poetry competitions like today’s rap competitions, were held in the marketplace. Muhammad’s (pbuh) recitation stunned its listeners for its beauty in Arabic. Many converted simply by listening to the deep acoustic rhythms, literary merit and wisdom of the Quranic verses. In contrast, the Arabic of 1400 years ago was restricted to words and expressions relevant to the simple life of desert men and it was impossible to express metaphysical ideas or scientific, religious and philosophical concepts. In fact the science of Arabic grammar was developed after the revelation of the Quran, using the Quran as a basis for devising its rules. It is difficult to find an explanation (other than revelation) that explains how a book existed that superseded, and also differed so greatly from any other Arabic literature. The challenge of the Quran to produce a chapter like its own has not been met to this day :
“And if you are in doubt concerning that whichWe reveal unto Our slave (Muhammad) then produce a Surah (chapter) of the like thereof, and call your witnesses besides Allah if you are truthful.” [Quran, 2:23]
3) The Quran is a highly comprehensive book containing Divine truths, metaphysics, religious beliefs and worship, prayer, law and morality. It is a book fully describing the other life, a book of psychology, sociology, epistemology, and history, and a book containing scientific facts and the principles of a utopian life. A testament to the Divine authenticity of the Quran is that such a comprehensive book, one that was revealed over a period of 23 years, does not have any contradictory points.
“Will they not then ponder on the Quran? If it had been from other than God they would have found therein much contradiction and incongruity.” [Quran, 4.82]
4) Could Muhammad (pbuh) have been a liar or had motives for inventing the Quran? The early years of Muhammad’s (pbuh) mission were punctuated by persecutions and sorrow. His followers were brutally tortured, killed and forced to migrate. His clan was boycotted and he was stoned. His enemies even offered him wealth and kingship if he abandoned his call to the belief in One God. Instead, the Prophet (pbuh) lived a very austere life and never pursued any worldly gains like fame, power or wealth. Furthermore, the life of Muhammad (pbuh) was a practical embodiment of the Divine message and a study of his life (through the Hadith) provides an appreciation of this fact. Even before he received the Prophethood, he was known in his society as Al-Ameen (The Trustworthy) and As-Sadiq (The Truthful). Both Muslim and non-Muslim scholars attest to his honesty and integrity
5) The Quran mentions things that were not known at the time. How can the existence of these verses be explained? The Quran has scientific descriptions only recently discovered by modern science and that could not have been known 1400 years ago.
“Man We did create from a quintessence (of clay); then we placed him (as a drop of) sperm in a place of rest, firmly fixed; then We made the sperm into a clot of congealed blood; then of than clot We made a (foetus) lump; then We made out of that lump bones and clothed the bones with flesh; then We developed out of it another creature.So blessed be Allah,The Best to Create” [Quran, 23:12-14).
Professor Keith Moore, a prominent scientist of anatomy and embryology (University of Toronto, Canada) commented: “It has been a great pleasure for me to help clarify statements in the Quran about human development. It is clear to me that these statements must have come to Muhammad (pbuh) from God, or ‘Allah’, because almost all of this knowledge was not discovered until many centuries later. This proves to me that Muhammad (pbuh) must have been a Messenger of Allah.”
The Quran describes the expansion of the universe:
“And it is we who have built the universe with (Our creative) power; and verily, it is We who are steadily expanding it.” [Quran, 51:47]
It was not until 1925, when Edwin Hubble provided evidence of receding galaxies, that the expanding universe came to be accepted as a scientific fact.
Professor Alfred Kroner, a world-famous geologist, explained : “ Thinking about many of these questions and thinking where Muhammad (pbuh) came from, he was after all a bedouin. I think it is almost impossible that he could have known about things like the common origin of the universe, because scientists have only found out within the last few years with very complicated and advanced technological methods that this is the case.”
The Quran describes geographical concepts that were proven after its revelation. For example, it was the common dogma 1400 years ago that the earth was flat, but the Quran described it as a sphere, compressed at each end (like an ostrich egg) :
“And the earth moreover, He has made egg shaped ” [Quran 79:30]
In 1597, when Sir Francis Drake sailed around the world, the earth became known to be a sphere.
by : whyislam dot org