Something created all this, directly or indirectly, FK, and that somehting we call God. Whether that something is really God is not certain. But we believe it is.
We really don't have a concise definition of God. We don't know God. We only "know" Him through the relaity of our world, the seemingly endless universe, whatever the "voices" inside of us told us, and what we are willing to believe.
Chances are we will not discover for sure what made all this in our lifetime, so we wll continue to call it God, and there is no sure way of knowing if we will know about it when we are dead.
As far as the sun not rising tomorrow, there is a very real possibility of that, too, FK.
And THIS is the downfall of both the Renaissance and "New" theology and philosophy. With the above thinking, there ARE no answers to the questions that vex men's souls. Many men spent their lives searching for these answers but never got them because they refused to accept the idea that God is there (He exists), He is personal, and He is in control.
As far as the sun not rising tomorrow, there is a very real possibility of that, too, FK.
That's true. But if that happened, would you then KNOW that God is there and exists? IOW, are you like doubting Thomas, or do you "know" that while on earth you will never "know"?