RefBap,
I decided to start a new thread for this. Hope this helps answer your question.
In reply to:

Also, I'm wondering: why wouldn't someone co-author a book with someone else just because they're charismatic?


I would say that I would distrust a charismatic because they are likely to put experience before the Scriptures. If their experience goes against scriptures, they will often throw away the Scriptures. Our experiences can be deceptive and are not a reliable way of receiving information from God. The Holy Spirit guides us into all truth through the Bible. We get into trouble when we believe that there is new revelation coming from God. The Scriptures are complete.
R.C. Sproul preached on the charismatic movement not long ago on Renewing Your Mind. He was involved in it for a time starting in 1965. He said that once when he received 6 job offers, 5 of his charismatic friends came to him each telling him that God told them to tell him to take one of the jobs and each one said a different job from what the others said! [Linked Image]
He ended up taking the 6th one.
He said in the April Tabletalk,
"The more interpretations of tongues-speaking and prophesies I heard, the more false doctrine and false prephecy I heard. Several people spoke "prophesies" to me about specific things that would occur within a specific time period. Every single prophecy of that sort failed to materialize...
"My final departure from the movement came when I realized that I must live by the Word, as the Spirit never works against the Word but always with it and through it."
Susan