'Words of This Book' in the Bible

But he said to me, "Do not do that; I am [only] a fellow-servant with you and with your brothers, the prophets, and with those who obey the words of this book. You should worship God."

And if anyone takes away from the words of this book of prophecy, God will take away his share in the tree of life and in the holy city, which are described in this book.