Look at the sun, and you can't see it. It would blind you. G-d is greater than the sun - G-d created the sun and the stars. If you try to look at G-d, you would not be able to see G-d.

Prove that the tailor made the suit. The tailor cannot prove he made the suit by pointing to the suit. If you try to prove that G-d created the world, someone will always come up and say it's not so. That's because we are pointing to the world.