I speak as a Muslim.
Christians and Jews, you should not expect a book put together 2000 years ago to be authentic and in its original form in this day and age. This can only happen if God makes it to happen miraculously. The world has always been full of intrigues and dishonest people and organizations have always existed. You lose credibility when you refer to the Bible or the Torah (today's Torah, if Judaism claims to exist by the Torah).
No, what is actually happening is that while the rest of the civilized world was promoting freedom and equal justice, education and liberty and advancing in ways unimaginable to the superstitious and uneducated, Islam was systematically killing off anyone with the intelligence and courage to oppose it leaving entire countries bereft of intelligent life and filled to the brim with stupid cowards.,
All your dreams of taking over the world will be shut up in the womb like a still born birth.
When you kill thousands of chickens because ten were infected, that's uncivilization. When you wear makeup or add implants to your body, that's uncivilization. When you send your mothers and fathers to retreat homes, and live with a dog inside your houses, that's uncivilization.
Great Muslims have always been known for their impact on the world. Look to the example of Muhammad (peace be upon him and his family), who taught love to human beings so that today, humans respond and Islam became the fastest growing religion in this planet. Muhammad (peace be upon him and his family) is the one whom we credit for the wonderful rise of the Arab and Turk civilizations. The western world only reconciled the Church and science thanks to St Thomas Aquinas who taught the theories of the Muslim philosopher Averroes (I don't know if this is his name in English, and I may be mistaken on which actual Muslim philosopher it was). So whatever the West achieved as of today, they owe it to Muhammad (peace be upon him and his family, the master of all nations).
Pakistan's late Benazir Bhutto also made a valuable impact in the world, though Islam does not favour that women occupy supreme positions of power. Ibn Arabi and Rumi are very popular in the Western World. Muhammad Hisham Kabbani continues to impact America's interaction with Islam. This world without the Muslims, that's unconceivable.
Even where Islam is spreading, we aren't seeing an Islam that is compatible with the modern world, but rather the extremist, Wahhabi-flavored fundamentalist Islam.
New Muslims (converts) are not likely to be extremists. They may be exposed to extremist theological doctrines, but they usually don't join extremist groups.
the Qur'an is not written in 100% Arabic but has some Hebrew, Persian and even Greek words. If Arabic is the language of heaven and the Qur'an was dictated perfectly why does the Qur'an contains foreign words that are Hebrew, Greek and Persian?
The Qur'an is in perfect Arabic.
Arabic is not the language of heaven. It is the language of the people of heaven.
If a Muslim rejects the Bible he must also reject the Qur'an because Mohammed appeals to the Bible as an authority. If he accepts the Bible he must then reject the Qur'an, because of the contradictory stories that challenge essential eternal truths.
Muhammad (peace be upon him and his family) have said at times to Jews or Christians, to look in their own books, because he knew that the truth they denied was still in those books. How did he know ? Maybe it simply made sense, maybe God told him. There were books revealed to Jesus and Moses, from God, and the Qur'an talks about those books, the Gospel and the Torah. Other prophets were also revealed other books, from God.
As a Muslim, the Christian's belief that the Bible is the word of God reminds me of the Santa Claus tale. The day children realise it is just a tale, it will break their hearts.