Attitude of the Issue of enunciation Prophet of Islam in Quran and its Comparison with Existing Texts

In several verses of Holy Quran, stated by previous prophets or recorded in previous Holy Scriptures, there are statements about enunciation (beshārat) of arrival of Islam’s prophet. An important question is that what’s the purpose of holy Quran about this subject? Is it proving the issue of special prophecy, like lots of theologians? Another question is that the intention of Quran about enunciator texts is exactly these remained and existing one? If so, what’s the claim of holy Quran about the quality of this enunciation? The hypothesis reached by this article is that firstly the purpose of holy Quran for presentation of this subject isn’t proving the issue of special prophecy; secondly, nobody can result from the holy Quran that the name of Islam’s prophet is in existing texts. Therefore, verses of Quran have given the general enunciation in the form of stating the descriptions which is in existing texts.