Revelation 22:18; Revelation 22:19

18 I, John, solemnly warn everyone who hears the prophetic words of this book: if any add anything to them, God will add to their punishment the plagues described in this book.

19 And if any take anything away from the prophetic words of this book, God will take away from them their share of the fruit of the tree of life and of the Holy City, which are described in this book.