'Words of This Book' in the Bible

See, I come quickly. A blessing on him who keeps the words of this book of the prophet.

And he said to me, See you do it not; I am a brother-servant with you and with your brothers the prophets, and with those who keep the words of this book: give worship to God.

And if any man takes away from the words of this book, God will take away from him his part in the tree of life and the holy town, even the things which are in this book.