If God were clear as the Sun we wouldn't have ten thousand contradictory religions in the world.
I think this 'inner vision" is, in fact, just ingrained conventionalism.
You were raised with this notion, it was instilled before you developed any sort of logical firewall or ability for critical analysis. Had you been raised an atheistic Buddhist or jungle animist your gut would be telling you these views were obviously the correct ones.
I was not raised into the Baha'i Faith. I investigated it. At first I opposed it and was against it but reason and logic forced me to accept it. After that I considered I had found a great treasure.
I can tell you that this is not what people think and they should not judge by previous standards.
Yes I now have inner vision to see the truth and I see it abundantly clearly even as the sun. The fact others are deprived of this is very, very unfortunate.
The Baha'i Teachings have resolved in my mind all the conflicting creeds and religions and now I have a clear understanding of what and why they occurred and as a result complete certitude and contentment. I have found what everyone seeks, true happiness but I cannot give it to others as they must find it for themselves.