I'm so sorry about the confusion...I would P.M. you, but I don't have enough posts to do so.
Maybe we should talk about the original first. Once that is clear, maybe I will have a better chance at communicating and coming up with a good "copy" using a different topic.
So, what is the original "A" trying to communicate in those two sentences?
- "It" (the Trinity) is not a Biblical doctrine?
- "It" is a Biblical doctrine?
- "It" both is and isn't a Biblical doctrine?