It proves that it is a concept invented by man, not God or Jesus Christ.
Of course it's a concept created by men. I called it a formulation. That's exactly what that is. That doesn't make it invalid! You think about the world all the time, everyday through concepts created by men. They are models that help you interpret the world. The doctrine of the Trinity is for all intents and purposes, a model. It's a way to talk about God, to relate to God, etc. Just as theism is, just as panentheism is, just as pantheism is, etc.
Say, here's one for you. Here's a word not in the Bible.
Incarnation. That's formulation too. Hypostatic Union. That's a formulation too. But yet, I'm sure these are OK with you? Why? Because the Bible supports this? To them, the Bible supports the Trinity too. The only difference is what you choose to believe or how you read the Bible through your particular lenses. Same as them.
Well, one thing I'm sure we'd agree on is that Jesus would certainly teach what he believed we needed to know about salvation. The fact that he DIDN'T teach trinity logically suggests that it is not a concept that is relevant to salvation.
That's right. It may however be useful to someone. What's wrong with that?
Nobody is making that argument. Nobody is suggesting that theologies that are not spelled out in the bible are "pagan" because they aren't clearly defined in scripture. The claim is that TRINITY is pagan because is based on the beliefs of pagan cultures, who commonly held to "trinities" which predate Christianity.
I'm going to stretch your mind here a little...
That other cultures came up with similar ways of understanding God does not mean they ripped each others thoughts off via shared stories. It could indicate that people independently come up with the same views because they are seeing the same thing! Coming up with the fact of the earth being a globe is something done by participation with it and observation and thoughts about it.
How about understanding it is better to love than hate? This also was arrived at by other cultures independently. "Love your neighbor as yourself" predates Jesus by a long, long time. Did he rip off this "pagan" teaching that Plato said himself 400 years earlier? Is Jesus teaching on love, pagan, because they taught it too?! You see, these similarity do not mean "theft". That's a very narrow, and inaccurate way of thinking.
Well maybe that's your first problem. If you don't know what something means, how are you going to criticize someone else for using the term?
Of course I know how the term pagan is used. I find it a meaningless and distracting term, used to dismiss something with a pejoritive. To the Hindu, the Christian is Pagan. To the Buddhist the Muslim is pagan. Blah, blah, blah. That's such an antiquated way to speak of cultures not our own. And that was my point in asking "what does the term
really mean"? Answer: nothing.