Evidences on the Authenticity of the Qur’an

As the opponents want us to believe, the Holy Qur’an is not the product of the holy Prophet’s speculation and thinking, rather it is a revealed book in which every word is the word of the Almighty that was communicated to the Prophet through the process of revelation. While historical testimony in this regard is unquestionable, the Qur’an emphasizes it further with a view of showing the opponents of Islam that what came out from the sacred lips of the Prophet was a divine revelation:
“(This is) the revelation of the book in which there is no doubt, from the Lord of the worlds. Will they say: ‘He has forged it!’ Nay, it is the Truth from the Lord ...”. (32:2-3)
“But Allah bears witness that what He has revealed to you (O Muhammad), He has revealed from His own knowledge, and the angels bear witness (to it), but sufficient is Allah for witness”. (4:166).
“And you (O Muhammad) did not recite any book before this, nor you were able to transcribe one with your right hand. In that case, indeed those who talk vanity could have doubted.” (29:48).
Following are some evidences and arguments in brief, to prove the authenticity of the Holy Qur’an as the word of Allah (swt).