God is the Holy Ghost.
HE has no body, and HE can't be contained.
The only proof would be with a seance but then there's no telling what ghost you'll be communicating with.
You may as will contact the ghost of someone related to you.
But then in all reality your ancestors are ether snails or else your the offspring of the Holy Ghost.
Then again with simple reasoning there is a reason way we are capable of destroying earth, and its because our Father created it. Think about that.