The point being is that as humans we have certain way that we progress through knowledge and understanding... and that way generally doesn't start with being pulled into some external reality where the secrets of the universe are explained.
We generally get a wide variety of information, and we weigh the evidence to form a mental model as to what this world is really like.
But, all you have is a claim of experience. My dad had an "out of body experience" when he went through surgery, and he flew through tunnels to a bring light with a voice that told him that I will play in the NBA

. Of course I didn't, quite the opposite... I went and got an education and didn't really make the sports into a career. Was it a "conditional prophecy". Was it an imagined experience?
But let's say that I did make it into the NBA. Would that be an evidence of an all-knowing deity?
Can you see my point? Without some collective experience of reality, it's very difficult to convince people... and God if it exists should know it quite well and at least provide better evidence than that. I'm sure God would be perfectly capable to be more convincing to people like me who are very much open to the idea that God exists, but simply don't see evidence that it's true.