Existence isn't the issue.
We merely apply names to things.
Reality, just, is.
Now I know for a fact that is exactly what many religious people do every day, adding somewhat of another contention to what you're saying.
How many times have you thought
you knew someone, only to find
out that they weren't who you thought they were? Or thought you knew something only to find out that other know more than you about that thing?
Wouldn't it just be more truthful to say, "I don't know."?
Saying "i don't know" is non-different than saying "i know", as people do know things. They just don't know things entirely, which "i know" may well suggests.
You can always speculate, contemplate, seek god, if he is real to prove himself to you, show himself to you. But until he does, to say you believe is a lie.
Again, I doubt existence is the issue.
What is the point of thinking God will show himself to you, if you don't believe in God?
That's like a man going up to a woman, and saying;
I wish to marry you, please prove to me that you will love me, or I will not
marry you.
jan.