Jesus warned about what would happen to anyone who adds to the message of this book or who takes away any part of its revelation.

Revelation 22:18-19

18 “I, Jesus, solemnly warn everyone who hears what I have foretold in this book: If anyone adds anything to this message, God will cause him to experience the plagues that are {that I have} described in this book. 19 If anyone omits any of the message about what I have foretold in this book, God will take away that person’s right to eat fruit from [MTY] the tree that enables people to live forever. He will also take away that person’s right to enter God’s city. Both these things are described {I have described both these things} in this book.”