Verily We sent down the Qur'an, and We will truly maintain it

Among the characteristics of the Qur'an is: it is the Scripture that facilitated to memorize and repeat over and over again, and he also made easy to remember and understand it."And verily We make it easy for learning the Qur'an, is there anywho take lessons?. " (Al-Qamar: 17), 
In words of Qur'an, the editor-wording of Qurán , and verse contain beauty, pleasure and ease, making it easy to memorize for people who want to memorize it, save in his heart, and made her heart as place of Qurán.

           From here, we have thousands and even tens of thousands of Muslims who memorize the Qur'an, and the majority of them are children who have not mature. In the age that was a little boy, they do not know value of the scriptures, as well as whether or not he is holy, but still memorize the Qur'an by number of people who a lot of it.

          If you are researching the attention of Christians to their Scriptures, no one will get it memorized, not half, or quarter, from among those who believe in the book, until the monks, priests, bishops and even cardinals do not memorize their holy book.

While the Qur'an, we find many non-Arab his memorize the Al-Qurán very good: like our brothers from India, Tajikistan, Pakistan, Bangladesh, Afghanistan, Turkey, Senegal and other African-Asian Muslims, but they do not understand the language Arab. 
It is all a manifestation of Allah SWT says:

"Verily We sent down the Qur'an, and We will truly maintain it. "(Al-Hijr: 9).

Allah has guaranteed the maintenance of the Qur'an and among the devices to maintain it is: prepare people who memorize it, from one generation to another.