if there is one, utterly compelling and self-evident proof for the existence of God it.
yes, there is. it's not the one you were looking for though. the above section of your post is what caught my eye. especially the term "self-evident". i haven't read the rest of this thread because my response is actually going to be considered an aside as it doesn't address what i think it is that your require as a valid response.
first of all i should say that God requires that we return to Him by faith and faith alone. i think this is the case because by lack of trust and belief adam and eve failed His only test. they basically doubted Him. to reverse this with believing Him would be harmonious with how God is dealing with mankind at a more real and spiritual level (as versus the mosaic law and all the archtypes in the old testament that are pointers or shadows of real, inner truths).
that being said and taken as a premise by yourself (for the moment) it follows that concrete, verifiable proof of His existence may not be His intention at all. if it were, then faith goes out the window. especially if we are temporarily accepting the premise that He exists and got really ticked off when He wasn't believed). so, lack of this kind of hard evidence is a prerequisite.
but, He can't just leave it there or we wouldn't have a clue as to His existence...which would then toss the whole matter back into the garbage once again (faith included). so He would necessarily have some way of presenting Himself and His case, albeit in a stealthed manner, so that we all would have some sort of compulsion to look deeper into the shadow that is God.
Hopefully this makes some kind of sense to you. i realise that operating under a premise while trying to preserve a personal proper perspective can be difficult at best. so, if all of the above rings true enough as you take the perspective of what you know to be what the bible says and what Christians jointly believe....then there isn't supposed to be tangible evidence but there must be some kind of way to communicate or search or become aware of the things of God. Agreed? if so...read on.
here's the nut. taking the probability of a "line" of connection to a God that doesn't want to prove Himself as a valid postulate, then all that is left is to discover the nature and mechanics of this line. how to do this? i would start with those who say they have found it. and that would have to be Christians. at least we'll suppose that if the line of communication is there, then at least some Christians have "connected". i am one such person. and that's why i'm posting. i have the proof you are requesting proof of.
unfortunately, if you refer to the first part of this rambling...God doesn't make this proof transferable as it would toss everything He's working for in the trash again. if i could prove to you that i have "one, utterly compelling and self-evident proof for the existence of God" then you would have it in the blink of an eye. as would billions of others.
so, i can't prove it to you based on the substance of my own immutable proof....faith. to wind this up and include God's opinion on the whole matter i'll include some short scriptures. it doesn't prove anything except to 1. point out the nature of the "self evident" proof that God intends and also 2. why it is that you don't have it and 3. why it, and any proof of God is purposely quelled to those who don't have faith.
i'll have to add these references tomorrow as my bed is calling me softly but persistently...there won't be many, and i'll make them short
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