(the Old and New Testaments)

This [Message] is a declaration to [all] people as well as a guidance and instruction for God-fearing people.
Quran, 3:138

Will they not ponder on the Quran? If it had been from other than God they would have found therein much incongruity (inconsistency).
Quran, 4:82

And it was not possible for this Quran to be produced by other than Allah, but it is a confirmation of the revelation made before it and a detailed explanation of the Book (former scripture), without a doubt it is (a revelation) from the Lord of the worlds.
Quran, 10:37

And We have displayed for people all manner of similitude in this Quran, but man is, in most things, arguable.
Quran, 18:54

And We have displayed for people all manner of similitude in this Quran, but man is, in most things, arguable.
Quran, 18:54

And We have certainly presented for people in this Quran from every [kind of] example - that they might remember.
Quran, 39:27

Do they not reflect upon the Quran, or are there locks upon [their] hearts?
Quran, 47:24

And indeed, [O Muhammad], you receive the Quran from one Wise and Knowing.
Quran, 27:6

With the truth We have sent the Quran down, and with the truth it has descended, We have not sent you, [O Muhammad], except as a bringer of good tidings and a warner.
It is a Quran which We have separated [revealed intervals] that you might recite it to people over a prolonged period. We have sent it down progressively.

Say: “Believe in it or do not believe. Indeed, those who were given knowledge before it when it is recited to them, they fall upon their faces in prostration, saying: Glory to our Lord! Verily the promise of our Lord has been fulfilled." And they fall upon their faces weeping, and the Qur'an increases them in humble submission.
Quran,17:105-109

Say: “Call upon Allah or call upon the Most Merciful. Whichever [name] you call, to Him belong the best names."
And do not recite it [too] loudly in your prayer or [too] quietly but seek between that an [intermediate] way

And say: “Praise be to Allah, who has not taken a son and who has no partner in [His] dominion and who does not need a protector out of weakness. Glorify Him with great glorification."
Quran, 17:110-111

Rely upon the Exalted in Might, the Merciful, who sees you when you arise [to pray], and sees your movement among those who prostrate [to Him]. He is the All-Hearing and All-Knowing.

Shall I tell you upon whom the devils descend? They descend upon every lying, wicked person.
They listen eagerly and pass on what is heard. Most of them are liars.

And as for the poets, those who go astray follow them. Do you not see that they wander distracted in every valley? And that they say what they do not do?
Except those [poets] who believe [in God], do righteous deeds, engage much in the remembrance of God and defend [their faith and the believers] after they were wronged.

And those who have wronged will know [after their death] to what kind of return they will be returned.
Quran, 26:220-227

I swear by that you see, and by that you do not see
It is the speech of a noble Messenger. It is not the speech of a poet [little do you believe]. Nor the speech of a soothsayer [little do you remember].
It is a Message sent down from the Lord of the Worlds.

And if [the Messenger] were to make up about Us some [false] sayings, We would have seized him by [his] right hand, then We would have cut his life-vein. And none of you could withhold Us from [punishing] him.

Indeed, [the Quran] is a Reminder to the godfearing;
And We certainly know that there are among you that reject [it]. And indeed, it will be [a cause of] regret upon the disbelievers.
Indeed, it is the truth of certainty. So exalt the name of your Lord, the Most Great.