wb the Quran? The only book uncorrupted in its existence. In it God says He will preserve the book, and if it is a fabrication He challenges you to produce even a single Suraht (chapter) like it. Also neither God nor the angels will appear until the Day of Judgement, so asking for either while you persist in disbelief is kind of a bad idea.

Bring on the downvotes, it’s the worst/best you can do.