So what is this evidence that Islam claims to present that is so convincing? The first issue is authenticity. Purity of text is quite vital to the whole spirit of "fund". This is because once a text has shown to have been corrupted and altered in order to make it comply with doctrinal or political expediencies, and if there is no reliable means to distinguish the corrupt from the pure, then there is not one passage of that text that cannot be called into question. This is not so easy with a pure and preserved text. This is well understood by the Christian fundamentalists. If it is not the " Word of God ", then what real value does it posses as guidance, except as a collection of wisdom? Few serious scholars, even from Islam's opponents, have tried to dispute the Quran's historical authenticity .
According to Allah's statements in His Book, there were two distinct revelations of the Quran which took place. It is important that these two revelations be understood in order to clear up the apparent contradictions in the various terms used in the Quran and Sunnah to describe the Quran's revelation. On one hand, the Quran is referred to as having been revealed in its totality in Ramadan or on Laylatul-Qadr, the Night of Decree; while on the other hand, it is referred to as having been continuously revealed in segments up until just before the death of the Prophet (peace be upon him).
Thanks to its undisputed authenticity, the text of the Quran holds a unique place among the books of Revelation, shared neither by the Old nor the New Testament. In the first two sections of this work, a review was made of the alterations undergone by the Old Testament and the Gospels before they were handed down to us in the form we know today. The same is not true for the Quran for the simple reason that it was written down at the time of the Prophet; we shall see how it came to be written, i.e. the process involved.
A discussion on the basic qualities of a healthy mind and what it will enable a person to do as described in the Quran. Mind and reason are an essential part of Islamic thought and legislation. One could not exist without the other. What exactly do we refer to when we talk about the mind? There are two kinds of reasoning by the mind that have been identified. The first is intuitive reasoning that includes: the capacity to comprehend, make rational conclusions, form speech and behave sensibly. The second kind of reasoning is acquired from our environment, such as the things we have been taught or become familiarized with.
This booklet is for every freethinking and broadminded human being whose goal is to find the truth. We encourage you to read this booklet with an open mind. For a few moments, please set aside your pre-conceived notions and take a critical look at what is presented. It will open before you a new dimension of your role as a human being in this universe. 
The Quran is the holy book which Muslims recite and turn to for guidence in all aspects of their life. It is the last testament in a series of deivine revelations from God. 
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