The Quran: Words of GOD

There is only one book that says of itself, in no uncertain way, that it is purely composed of the literal "Words of God". This book is the Muslim holy book "The Quran". This book is read in the first person narrative with the speaker being God, exalted, .....

Read the following verses to get an idea of Quranic narrations:
(Quran [13: Thunder]: verse:1)
"Alif. Lam. Mim. Ra. These are verses of The Book. That which is revealed unto thee from thy Lord is the Truth, but most of mankind believe not. "

(Quran [14: Abraham]: verse 1):
"Alif. Lam. Ra. (This is) a Book which We have revealed unto thee (Muhammad) that thereby thou mayst bring forth mankind from darkness unto light, by the permission of their Lord, unto the path of the Mighty, the Owner of Praise."