I'm with you, jwfacts and greendawn. It's a confusing issue and the Bible does not make it easy to unravel. And, I disagree with you, the_classicist, because it is not incorrect or illogical to assume the Bible as an ultimate irrefutable source, even if we do it as a starting point for academic reasons. If you don't, then you have to pick and choose what is right or not in it and then that puts everything and anything it says in doubt. The ideal thing would be to have "outside" evidence corroborate what is in the Bible already. If external facts contradict it, then we must put it into question. If they agree, them we can trust it. If outside facts are unclear, then we would have to leave it at that.
I'm sure this topic has been beaten to death on this forum, but I think what we all need, not a definitive answer, but a way to ascertain if the discovery method we select is appropriate and correct.
For example, I can't buy the argument in the article that NeonMadman graciously supplied. I come up with a third alternative other than: "We are left with only two alternatives: 1: The Bible is incorrect, or 2: God is a plural personality consisting of three persons in one Being." I can for example say that the conclusion is: "The Bible is unclear regarding the subject and the historical and scientific evidence seems to contradict and/or agree with it while it shows that the concept did not originate in the Bible but in other religions." I can say that because the article makes some incorrect assumptions: 1) that the "Us" referred to in the Genesis quotes is indicative of plurality of individuals and not as a pronoun of grandeur, as the English royalty used it in the past. Also, it could very well be that it is as the JWs explain it, that if it refers to more than one person, it would be God's son and/or the angels. But the quotes in the article for that argument really say nothing regarding the duality or relationship of the members who comprise the "Us". In itself, it's does not support a trinity. 2) The argument regarding the use of the term "Elohim" falls flat on it's face because the term is also applied to humans in other places in the Bible. Although the article is extensive and is careful to say:"There is much evidence to support the fact that God exists as a Trinity", many of the quotes follow the same vein as I explained above. That makes it a bit shaky. I would have like it better if it also showed a more balanced view and cite the Biblical reference that appear to contradict the trinity. Also, the statement from it I cited above, indicates that it considers the trinity a "fact", which means that the "evidence" that follows may render it a biased view. It should let you render your own conclusion based on a balanced presentation.
All this may leave us nowhere. However, I'd rather be there than in the wrong place. I do like to discuss topics such as this one because it helps me to question my position and allows me to exercise my ability to reason logically. If I'm faulty there, I would hope that someone can kindly point it out. I'm not sure if the correct procedure would be to take it off-line or continue to use this forum for the benefit of others.
Etude.