Revelation 22:18

For I testify unto every man that heareth the words of the prophecy of this book, If any man shall add unto these things, God shall add unto him the plagues that are written in this book:

I testify and warn everyone who hears the words of the prophecy of this book [its predictions, consolations, and admonitions]: if anyone adds [anything] to them, God will add to him the plagues (afflictions, calamities) which are written in this book;