[Ali Imran]

We certainly don't go around saying on social media that the Bible came from carvings on caves. 

No, of course not. I know where the Bible came from. I have a bit of knowledge on this, after countless of hours listening to debates and lectures by Bible scholars.

I also have a bit of knowledge of where the Quran came from. I do not doubt at all that the Quran is from God. 

Ergo, I know you cannot have the same level of faith as I have, based on the divine revelations we have in our hands. But the good news is, you can. Up to you.