We perceive reality through our senses which our mind then interprets. A dog sees a meteor striking the earth, and thinks "something bright and noisy and bad has happened, I should run away and warn my pack", and our ancestors might've thought "the angry gods hurl down fire to punish us" while we say "a rock is burning up due to friction in the atmosphere, caught in the gravitational pull of the earth".
But we all saw the same thing, a ball of fire falling down. Even the dog saw that happening. So maybe we do not understand everything that's happening around us, but what our senses register stays the seem.
Society's concept of a God evolved from multiple gods being responsible for everything, the sun rising and setting, the crops being good or bad, to a single God responsible for everything. And then slowly, the things God was responsible for diminished. We learned he was not responsible for lightning flashes, volcanic explosions, the sun rising and setting. Fast forward to now: we cannot say for sure if God was there to set up the laws of nature and push the start button on the big bang, but from that moment on, we can explain how the rest took place without divine intervention. And the more we learn, the less responsibilities will remain for God.