Paul states that God has shown us his hidden mysteries, even the Godhead can be clearly understood, so much so that we will have no excuse!
I appreciate your effort and your non-denominational view. But, I must disagree where I must, and this is one such place, for I see what seems to me to be an interpretation colored by tradition rather than plainly read as any thing may be read that is less than immediately obvious (few things are). Though I wish it were, the Bible for us today is not a Complete Idiot's Guide, even though each passage in it was well-enough understood for plainness by its original audience in its original language, because the world-view of them was not so darkened by Roman Catholic
[edited] mysticism. This is my conviction, and some had been burned at the stake for saying what I have just said. But, let me, at least for the current post, give one translation that makes the KJV more clear to us who no longer know such English as miuch as we might, in ignoarnce, think (as if the only difference is the 'thee's and 'thou's). This is from the Amplified Bible:
Romans 1:18-20:
For God's [holy] wrath and indignation are revealed from heaven against all ungodliness and unrighteousness of men, who in their wickedness repress and hinder the truth and make it inoperative [in their hearts].
For that which is known about God is evident to them and made plain in their inner consciousness, because God [Himself has shown it to them.
For ever since the creation of the world His invisble nature and attributes, that is, His eternal power and divinity have been made intelligible and clearly discernable in and through the things that have been made---His handiworks. So [men] are without excuse---altoghether without any defense or justification.
No secret mysterious bizzare stuff there. Just the basics. The question is, what were the basics that Paul assumed? I myself do not think he was a Trinitarian in the sense that the Roman Catholic is. I do not see that this "divine mystery", as the RCC has made it into, is at all revealed or even referred to in this passage. Nor even any Trinity as such. Just the monotheistic basics. This does not mean there is no Trinity of divine persons that the Gospel shows forth, but that is not the basics, it is a added mystery, or problem-whose-nature-and-solution-has-been-beyond-us. The creation reveals *first* one God, not three persons. This Trinity thing is different, but necessiated somehow by the Gospel.
My approach, which was accidental from my view, is much more applicable to things we know of, even though we fail to know what we think we know of them. A person, a living being, life, is three distinctions
: power, logos, and valuation (feeling, spirit, awareness, whatever). Consider very closely whence the "three powers" of government (executive, legislative, judicial). Person=authority. Without a person, there is no such thing as authority. True life is the true authority, and there is only one who has life in Himself: the Self-Existent One, transcendent, Yahweh.
It is absurd that biologists had tried to define life functionally. Biologist are alive, so how come they don't know the definition?! They do, but only implicity; but, they, as blind Adams, look to those things over which they have dominion to find answers to every possible question, until what they finally find, at its depths, forces them by its very strange nature to Adam's mind, to ask more fundamental questions than can be answered by direct positivistic and Newtonian-mechanical materialism.
If we applied all the Trinitarian logic to space without giving away that we are referring to space, then the Adamic mind will think that the unnamed entity referred to does not exist and that we are just making up some nonsense. But, when we reveal that we are talking about space, then the Adamic mind will see that it is, in fact, true. Space is not basically three things, space is one thing, understood in three ways.
The three dimensions of the foundation of reality are the three dimensions
of what it means to be a living being, and this triune foundation is the
triune standard of proof (True Power judges all other powers, True Mind
judges all reason, and True Spirit [love] judges all spirits).