In the end I think the biggest arguement against the trinity is if you believe the bible is inspired by God because it was not written for scholars that can go into the hidden meaning of words or deeply debate,Well that is very, very convenient. A scholar proves a biblical point - well you can always argue it wasn't written for scholars.
No what a scholar can do is make total gobbledegook sound like facts and blind you with science...
Just because something sounds feasible from a scholar doesn't mean it is, most of the time it's just their opinion and you have to be really careful of that!
Half of the explanations on this thread have been Peoples opinion of what something should mean, the cs lewis stuff is exactly that he goes off in to fiction to describe a way for us to try and understand the trinity,
excert from earlier post of cs-lewis info
Now the Christian account of God involves just the same principle. The human level is a simple and rather empty level. On the human level one person is one being, and any two persons are two separate beings - just as, in two dimensions (say on a flat sheet of paper) one square is one figure, and any two squares are two separate figures. On the Divine level you still find personalities; but up there you find them combined in new ways which we, who do not live on that level, cannot imagine. In God's dimension, so to speak, you find a being who is three Persons while remaining one Being, just as a cube is six squares while remaining one cube. Of course we cannot fully conceive a Being like that: just as, if we were so made that we perceived only two dimensions in space we could never properly imagine a cube. But we can get a sort of faint notion of it. And when we do, we are then, for the first time in our lives, getting some positive idea, however faint, of something super-personal - something more than a person.
this sounds all very credible but it's pure fiction and opinion, it's not facts!
Saying elohim (GOD) can be plural doesn't take away from the fact that the masculine presentation means it was purely used to say one God that is a fact of the hebrew language. but a scholar can pretend that fact doesn't exist and can make you think that pluralising elohim is allowable but any jew could set us straight on that.
Next FACT there are more scriptures that describe jesus and God as separate and jesus as lower than God, than those that if taken alone may make you think hmmm maybe there is something to this trinity thing, So sheer majority vote has the single God belief as winning.
And finally like I said if God wanted us to believe he was a trinity why not just write it, why use description father and son etc that are going to make any person view jesus as his son if they just read the bible for the first time.
I just think if you have to twist scriptures and then your mind into loops to believe in the trinity then alarm bells should be going off, I don't have to twist my mind into believing a father and son are separate it's natural and it's biology.
reniaa