If you see a painting, do you believe there is an artist?
If you see computer software's user interface, do you believe there is a programmer?
If you were to see the world without your physical eyes, far from that Homo sapiens body you wear, would you realize that you must be more than merely a human?
God is devoid of space-time and energy-mass, but source of all these things. He is the perfection of source, like the Zen one-sided coin or one-hand-clapping. He is the Cause which is never Effect -- beyond all dichotomy.
I do not believe in God. I know God. There is a difference here that only the true self (the immortal child of God) within can see. The Homo sapiens body can no more see God than can a rock or ego pray.