I have an observation related to this topic. The thread began with a poll of whether "the Trinity is biblical and taught in the Bible." As it stands right now it has 38 for and 19 against, in approximately a 2:1 ratio. I have addressed this question in times past, and one of the first things I will ask is "What Trinity? Can you show me where?" Because it seems that different people have different ideas as to what that means.
Another thread on this site (Theology Online) posted a "Trinity Quiz": you are welcome to reference it here, I am posting the link because I think it does help answer those questions: What is the Trinity and is it Biblical and supported by the Bible?
http://www.challies.com/resources/take-a-test-on-the-trinity
So here's what I noticed while taking this quiz. First, it does have a definition, of sorts, if you page through the questions. However, the reasons given for the answers aren't bible verses, but rather things like the "Athanasian creed", the writings of "James White", and assertions of "John Frame." There is one reference of scripture for proof for a sub-point (question 13, John 5:36) but even that isn't used to prove the original question. The conclusion of the quiz is that
any other interpretation is heresy, and "
redemption is illogical and impossible without Trinitarian distinctions."
What I am underlining is this: the definition and defense of "Trinity" from this quiz was entirely from the Athanasian Creed, James White, and assertations of John Frame. None of those things are the Bible. One would assume that if the Bible clearly taught and defined "Trinity" that this source would be used instead. I would have to logically conclude that "Trinity" neither defined nor taught in the bible.
So this is what I propose. If you have a model of sorts to help you understand God, and it furthers that purpose without causing apparent biblical contradiction, then more power to you. But do not condemn others (as Rebecca Stark and Tim Challies have done) if they are willing to simply believe the Bible, as it says, for what it says.
Did the Word create all things, was God, is God, and made flesh and walked among us? Yes, my bible says that in black and white in the gospel of John. Do I need a Trinity doctrine, the Athanasian Creed, or James White to realize this? No, I don't. Do I need to believe whatever someone defines for me and calls "Trinity" to be saved? No, Mark 16:16 says that he that believeth and is baptized shall be saved.
Mark 16:16 KJV
(16) He that believeth and is baptized shall be saved; but he that believeth not shall be damned.
Acts 19:4-5 KJV
(4) Then said Paul, John verily baptized with the baptism of repentance, saying unto the people, that they should believe on him which should come after him, that is, on Christ Jesus.
(5) When they heard this, they were baptized in the name of the Lord Jesus.
I don't think that "Trinity" should be a dividing line among true Christians. If someone believes the scripture and is accountable to scripture, if they believe their Lord and Savior is also the judge of the quick and the dead, and has right to that position by virtue of being not only their creator but of all things, this is sufficient for saving faith. The thief on the cross didn't confess a Trinity, rather he admitted his guilt and asked for mercy from Jesus when he entered into his kingdom.