Are you asking me to name one thing we know is incompatible with the idea of a god?
A non-physical consciousness that transcends time and gravity violates most of what we know concerning physics.
No physical form, no neurons. No neurons, no thoughts. No thoughts, no consciousness. Unless of course you believe in the unproved and unsound idea of non-psychoneural intimacy but then you are just making shit up to keep the idea of god alive.
John Thornton