Sean,
One important thing --- that must be emphasized because it's never obeyed by those getting a wrong bent on theology...
NEVER, ever, never, ever read a Bible verse - ripped out of its context - even if it is parsed down with original language exegesis. Never ever!
Example: Romans is a letter that was read aloud, all the way through without stopping, to its original readers. (Paul is developing a specific progressive argument in this letter.) The point he makes in chapter 8 only has accurate meaning if one reads chapter 1-7 before that.

Here's a fun
educational experiment to try on anybody (cultists included) that use isolated verses to create their own special doctrine.
Get a newspaper article (of any sort) - number the sentences in the article, 1,2,3,4,etc. Then ask them, can we know what the article is about - fully and accurately - if we only read sentences 3, 14, 22 and 32? Do the same thing with an insurance policy; a chocolate chip cookie recipe; directions on a medicine bottle. (If you leave out the chocolate chips -- that's a serious omission! It could mean the difference between heaven or hell.)
The point is - we literate, human beings
never read any other sort of literature the way we like to cut up the Word of God. WHY is that? (BTW, the original manuscripts have no chpt/verse divisions.)
We must remember (for example) Paul wrote letters, to people, that
read like letters. Would any of us take aunt Martha's letter and only read verse 28 and 39 and think we knew what she was trying to tell us? !
I've used this teaching model for many sorts of opposing believers and cultists, alike. It is really helpful because it gets us out of the entanglement of "Scripture wars" and makes a sensible case for common literacy skills. Who knows....if your opponent still resists...they have yet to ponder (in the dead of night) the truth of how human beings read anything to learn something. Maybe they will start reading Romans from chapter 1 and not stop 'till the end...like Martin Luther did. (We all know what happened to him!)
Robin
[Edited on 1-8-2005 by Robin]