The Truth & Authenticity of the Quran

From: http://quranicteachings.co.uk/truth_of_the_quran.htm

One of the most important criterion to judge that whatever the Quran says is based on truth, is given in Sura Fussilet (Chapter 41, Verse 53]:


سَنُرِيهِمْ آيَاتِنَا فِي الآفَاقِ وَفِي أَنْفُسِهِمْ حَتَّى يَتَبَيَّنَ لَهُمْ أَنَّهُ الْحَقُّ أَوَلَمْ يَكْفِ بِرَبِّكَ أَنَّهُ عَلَى كُلِّ شَيْءٍ شَهِيدٌ


In time We will show them Our Signs in the utmost Horizons and within themselves, so that it will become manifest to them that this (Qur'an) is indeed the Truth. Is it not enough for them to know that your Lord is Witness to all things.
Al-Qur'an, 041.053 (Fussilat [Explained in Detail])
As human knowledge and research progresses many realities related to our inner world as well as the outer universe will unveil themselves. Consequently all claims made by the Quran will be vindicated and substantiated. Gradually the whole world will see that whatever Quran says is based on absolute truth. This is because the Book is from the One who oversees everything in the universe. He knows fully well what is going to happen here. His all encompassing knowledge is sufficient guarantee that whatever He has said is based on absolute truth.
But during the last six centuries or so, those who claim to be Muslims have done absolutely nothing in order to vindicate Allah's claim as is given in 41:53. During this period, they have added nothing much to the knowledge about the universe or psychology. It has been the western nations who have done enormous research about our inner world, human behaviors, psychology as well as the outer universe. It is the west who's research has substantiated Allah's claim that whatever He said in the Quran more than fourteen centuries ago is absolutely true.
There cannot be any contradiction whatsoever between the established science and the Quran. This is because both the Universe and the Quran are creations of One God. The universe is the 'work' of God and the Quran is the 'word' of God. Science is about discovering Allah's 'laws in action' in the Universe.
Another criterion to judge whether the Quran is from Allah or man's creation is given in Sura An-Nisa (Chapter 4, Verse 82):


أَفَلا يَتَدَبَّرُونَ الْقُرْآنَ وَلَوْ كَانَ مِنْ عِنْدِ غَيْرِ اللَّهِ لَوَجَدُوا فِيهِ اخْتِلافًا كَثِيرًا


Do they not reflect upon the Quran? Were it from anyone other than Allah they would have found many inconsistencies or discrepancies therein.
Al-Qur'an, 004.082 (An-Nisa [Women])
It is a shame that those who claim to be the believers in the Quran have so many differences among them. If there were no inconsistencies or discrepancies in the Quran, why its believers have differences among them? Quran says that it is not because of any discrepancies in Allah's Book but because of their own selfish rivalry among themselves and their desire to outdo and out-strive each other.


وَمَا اخْتَلَفَ فِيهِ إِلا الَّذِينَ أُوتُوهُ مِنْ بَعْدِ مَا جَاءَتْهُمُ الْبَيِّنَاتُ بَغْيًا بَيْنَهُمْ


None but the very people who were given it (i.e. the Scripture) differed about it after clear arguments had come to themٍ because of their selfish rivalry (in their desire to outdo and out-strive each other)...
Al-Qur'an, 002.213 (Al-Baqara [The Cow])
So, if the west on one hand is vindicating Allah's claim, those who consider themselves the true believers of Allah and His Book are falsifying Allah's claim. The question is, are they really the true believers or just pretend to be so?