Dougg -- all well and good but what about that bit in Deuteronomy about not "adding to or subtracting frorm Torah"?

In other words someone in the Greek text (or Koran or Book of Mormon, etc.) can't comne along after the fact and change the rules.

Quote John all you like -- it totally ignores the word of G-d. Would you accept what Mohammed says when he contradicts Torah?

I think not. There is conflict by the heap fulls both from Torah to GT and even within the GT itself.

So try to substantiate the concept from Torah. I'll wait.
And everything that Sarah tells you, listen to her voice. Genesis, 21:12