The Holy Bible says,

Do not add to what I command you and do not subtract from it, .... (Deut. 4:2)

....ignorant and unstable people distort, as they do the other Scriptures,

to their own destruction. (2 Peter 3:16).

I warn everyone who hears the words of the prophecy of this book:

If anyone adds anything to them,

God will add to him the plaques described in this book.

And If anyone takes words away from this book of prophecy,

God will take away from him his share in the tree of life and in the holy city,

which are described in this book. (Rev. 22:18-19).