Let us assume, for the sake of argument, that "Belief in God" refers to linguistic usage,
that "God" is a word that somehow situates or orients the varieties of human reaction to the "that there is something rather than nothing" -- awe, fear, anguish, gratitude, joy, curiosity, rebellion, anger, despair, hope, love.
So, then, what is "God" without the humans that designate "God" ? Is that a nonsensical question ?
What was God before humans evolved ? An abstract potentiality ?
A blind vector awaiting its name ? Nothing at all ?