To say “I don’t know’ requires both honesty and humility. To extrapolate from this assertion, that no one else can possibly know either, is hubristic in the extreme.
Not really. See below....
....they have tried to impart their insights and experiences to those who would share them. But no one else can open your eyes, your mind or your heart for you.
Insights are not enough. To know (really KNOW) the presence of The God (Singular, capital 'G'), then one must BE God. Again, see below.....
Your hubris is in assuming that the limitations of your own knowledge must necessarily apply to all of humanity, and all of human experience.
I only assume the limitations of being a finite organism (which I guess I DO assume all humans are).
To know God....
Given the unimaginably staggering size of the infinitesimal sliver of the Universe that we humans are aware of, it is no problem for me to assume that life exists somewhere out there, beyond our little star system. Furthermore, it's no big leap to assume that intelligent life exists elsewhere too. Some of these alien intellects may be VASTLY more advanced than our own; and they may have technology or even 'mental powers'
beyond our imagination. These latter beings, we might consider to be gods (plural, lower case 'g'), for their powers would be fantastical.
If a being appeared out of thin air in the center of a multinational UN meeting, and told humanity they were 'God', many people, even in these modern times, would fall to their knees and believe.
Others would demand proof. And after walking on water, then turning it into wine, and replicating a few hundred dead fish, many more humans would accept the presence of divinity.
Still others would want a fuller accounting. So the Entity takes them on a tour of the entire universe, and visits Christmas past and future, and brings into existence a star, with life-bearing-garden-planets in orbit around it. And these doubters would yield.
But some of us would question further. Saying, "Nice tricks." "But who is YOUR God?" To which the great being would claim that they have no God, for they are The One God. And we would inquire, "What are the limits of your realm, and the limits of your powers?". And they would say that there are none.
"Prove it", would be our reply.
In order to reasonably prove that the great entity was all-knowing (omniscient) and all-powerful (omnipotent), it would have to grant us a full use of it's own powers and knowledge (i.e. make us equal to them). For only by knowing all that they know, we could look into their own personal questionings. Only with that knowledge and power, could we tell if they had doubts; any gaps or weaknesses in its own summations of the multiverse, throughout all ages of existence, and all subatomic to universe-spanning laws of physics that apply to this multiverse and all other multiverses.
And if we found
even one gap; we would know, then and there, that this great and powerful being was merely 'a god' (lower case 'g'). An alien intellect with immense yet
finite powers.
But if we found that truly the span of all things, real and imagined, were contained as less than this one great entity, then.... AND ONLY THEN....could we be
fairly assured that this was in fact '
The One God'.
Unfortunately, we would never be able to return to our meager finite human shell of existence, and yet retain
all of the knowledge that would be necessary to comprehend the slightest, all-encompassing IDEA of what The One God is. And all that we could conclude is that we had been "convinced" that this being was God. Of course we might have been 'brain-washed' to believe the same; or drugged; or otherwise had our neurochemistry altered; or etc...or etc...
So without remaining as a truly infinite, omniscient and omnipotent God, we would be left still not fully KNOWING even the existence of God.
Many of the human religions and religious beliefs hold to the idea that once you truly die; you will become one with The One God; and they claim that you cannot come back from that omniscient state of existence.
And that's just spiffy.
But none of these living folks around us (or any with philosophical musings in old books) will know, or ever have known for sure, until they are dead and gone.
Just like you.
Just like me.
Death is PERHAPS the last answer....
..... or perhaps it's just the end.