 Sure does, but that's a quote from Deuteronomy chapter 4, which says essentially the same thing in almost exactly the same words. That's Revelation 22, 18 and forward. So think about it. It's quoting Deuteronomy chapter 4 and Deuteronomy chapter 13. So if you're going to hold Revelation 22, 18 to the same standard, well, then you should have nothing in your Bible after Deuteronomy chapter 4, or at least after the book of Deuteronomy.