I just refuted your claim. The book of revelation is AN OPEN BOOK!!! Anyone can pick it up and read it, and know what it says, and then go right out and convey that exact same message to anyone who has the ears to hear. Have you read it? Then you can also know what it says.
People have been revealing what the book of revelation says for literally thousands of years! Read a history book for crying out loud.
The evidence is empirically obvious and irrefutable. Prove me wrong. How can hundreds of thousands of people read the book of revelation and not know what it says? What do you want us to do, copy and paste the whole book here?
Here's the link: Now you have evidence that the book is open for you to read and know what it says.
Revelation chapter 1 KJV (King James Version)
www.kingjamesbibleonline.org