The fact that the universe is illuminated where you stand—that your thoughts and moods and sensations have a qualitative character—is a mystery, exceeded only by the mystery that there should be something rather than nothing in this universe. How is it that unconscious events can give rise to consciousness? Not only do we have no idea, but it seems impossible to imagine what sort of idea could fit in the space provided. Therefore, although science may ultimately show us how to truly maximize human well-being, it may still fail to dispel the fundamental mystery of our mental life.
How does a certain material arrangement make the leap to subjective consciousness? Why aren't we robots?
For me, the gap between the observable material world and consciousness isn't evidence of a deity, but it does, by example, make the existence of a God unseen by direct observation seem possible. We simply don't know how the observable parts of a system make a leap to consciousness, yet they can and they do. And we are no closer to filling that profound gap in our understanding than any human beings who have come before us.
Taking this further, is it possible that we are some sort of repetition of a larger God phenomenon? Are we a subsystem within nested systems of God subjectivities? Could we be in-his-image, not as a repetition of physical attributes, but as something more like an echo of a kind of consciousness?
I've never thought much of efforts by some believers to "prove" the existence of God. That strikes me as trying to fill the gap relying on methods that are guaranteed to fail. The gap, if it exists on a grand scale, just as it exists at the smaller scale, is the place we can't see, the place we can't study. And the mystery is further compounded by the fact that the observation of the parts is itself a function of subjective consciousness. Our method of knowing relies on functions that can't be explained by our method of knowing.
The most we can do is propose a larger cosmic gap with a conscious God on the other end of it. We can also speculate on why belief in a god or gods is so commonplace, but the speculation doesn't addresses whether or not there is a grand gap and an overarching conscious entity.
Harris via Sullivan