There we go again: then tell us how this is to be proven!
Observation: the universe. elements and all the physical features of the earth.
Assumption: they are a god.(not even supposing the 'same god')
Test... proof...falsify ???
The ultimate proof of gods existence.
Any idea how long this has occupied people allready?
And how come you are not capable to distinguish between a god and all that the creation stories are and do, and that this might imply it's own evolutionary timescale?
The most extreme consequence of your simplism, would be that if the universe would implode, this god would cease to exist.
Now tell me how the universe came into form, since you rejected the faith based position?