For I testify unto every man that heareth the words of the prophecy of this book,
--God's Addition--
If any man shall add unto these things, God shall add unto him the plagues that are written in this book:
--God's Subtraction--
And if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life,
Revelation 22:18,19