But there are different kinds of unknowns.
Some unknowns are known categorically, such as how many miles are there between Miami and the location of the next meteorite landing.
Some unknowns are not even known categorically, such as what possible events might disrupt the construction of a new, never been done before, machine. As an engineer, I can assure you that no process is ever executed exactly according to plan.
Some unknowns are unknown personally though it may be known by others, like lookup information you haven't looked up yet, or a set of experiences you have not yet experienced and so cannot conceive of what some specific experience really is because it is completely unknown to you.
Some unknowns are unknown only because our technology and/or conceptions of the universe are not adequate to understand them, like radio waves were unknown to the 18th century sciences. Radio waves still existed but no one was yet able to perceive them due to lack of ability.
So if the existence of God is an unknown to you, perhaps a more relevant question is 'Why is this an unknown?' Is it unknown because you don't have the ability to perceive God while others may, or is it because you haven't bothered to look into the matter? The latter describes most of the agnostics I personally know; it simply doesn't bother them one way or the other and the whole subject is tldr, lol.
Turn the tables, Brother... How can you be so ******* cock-sure?
The ancient stories? Give me a break!
Don't know about cock sure, but there is a high level of certitude.
I know that time as we know it can not be of infinite duration.
I know that there has to be a cause to everything that originates within time/space, except for some person/force that exists outside our time and space to instigate our universe.
I know that I have consistently seen more joy in the lives of those that follow God's laws rather than those who do not.
These are enough for me though there is much more.
I'll stand by what I said. Any Monkey who tells you he KNOWS what happens at death is the Monkey deceived.
You really shouldn't talk to strange monkeys, or didn't your parents teach you that?