Something to shake the very foundation of your lack of faith

[The Valkyrie]

let me Quote the Quran or Muhamamd(PBUH) as some of you may think from the book that was revealed to him 1400 years ago before any of you even existed but yet dealt with you already back then

"And of them there are some who listen to you; but We have set veils on their hearts, so they understand it not, and deafness in their ears; if they see every one of the Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.) they will not believe therein; to the point that when they come to you to argue with you, the disbelievers say: "These are nothing but tales of the men of old." 6:25

6:4-10
4. And never an Ayah (sign) comes to them from the Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.) of their Lord, but that they have been turning away from it.

5. Indeed, they rejected the truth (the Qur'an and Muhammad ) when it came to them, but there will come to them the news of that (the torment) which they used to mock at.

6. Have they not seen how many a generation before them We have destroyed whom We had established on the earth such as We have not established you? And We poured out on them rain from the sky in abundance, and made the rivers flow under them. Yet We destroyed them for their sins, and created after them other generations.

7. And even if We had sent down unto you (O Muhammad ) a Message written on paper so that they could touch it with their hands, the disbelievers would have said: "This is nothing but obvious magic!"

8. And they say: "Why has not an angel been sent down to him?" Had We sent down an angel, the matter would have been judged at once, and no respite would be granted to them.

9. And had We appointed him an angel, We indeed would have made him a man, and We would have certainly caused them confusion in a matter which they have already covered with confusion (i.e. the Message of Prophet Muhammad ).

10. And indeed (many) Messengers were mocked before you, but their scoffers were surrounded by the very thing that they used to mock at.

Let me quote Terry Pratchett:

"There are people speculating that I have found god.  I have enough trouble finding my keys and I know they exist."

And since you're quoting from a book of fantasy, so will I:

“Some humans would do anything to see if it was possible to do it. If you put a large switch in some cave somewhere, with a sign on it saying 'End-of-the-World Switch. PLEASE DO NOT TOUCH', the paint wouldn't even have time to dry.”

― Terry Pratchett, Thief of Time