The power of religion that attract the followers is that it's GOD words to the man kind.
How can we know is it really the words of GOD or maybe it's a human ?
In Judaism,the authentication of religion is a compose of 2 parts,revelation & tradition:
Only take heed to thyself, and keep thy soul diligently, lest thou forget the things which thine eyes saw, and lest they depart from thy heart all the days of thy life; but make them known unto thy children and thy children's children; the day that thou stoodest before the LORD thy God in Horeb, when the LORD said unto me: 'Assemble Me the people, and I will make them hear My words that they may learn to fear Me all the days that they live upon the earth, and that they may teach their children.' (Deuteronomy 4:9-10)
In Islam,the authentication of religion is placed inside the book:
If you have any doubt regarding what we revealed to our servant, then produce one sura like these, and call upon your own witnesses against GOD, if you are truthful. (2:23)
What does this challenge means?
Ever since the Quran was revealed, fourteen centuries ago, no one has been able to produce a single chapter like the chapters of the Quran in their beauty, eloquence, splendor, wise legislation, true information, true prophecy, and other perfect attributes. (http://www.islam-guide.com/ch1-2.htm#bf2).
This challenge is problematic in 3 aspects:
1.The criterion's - what should we measure? beauty? how can we measure beauty? beauty is in the eye of the behold,it's something subjective!
2.The judges - if we measure the poetry,only those who are specialists in poetry can decide,so how can the simple man that doesn't know or even doesn't understand poetry decide?should he trust the specialists?should he found his believes on other person opinion???
3.The language - the book is written in Arabic, and only in Arabic one can sense the beauty of the book,so how can one that doesn't speak Arabic ,should he trust those who speak Arabic?if this book is designate to the whole world,is it make sense that the book authentication can be prove only in Arabic???
Muslims scholars,know that this is a very frail prove so they now try to authenticate the quran in other ways:
Not many would accept the Qur’aan’s extraordinarily beautiful language, as proof of its Divine origin. Any scripture claiming to be a divine revelation must also be acceptable on the strength of its own reason and logic. (http://www.emuslim.com/QuranandScience/QuranandScience.asp)