Praise be.

"All Bibles Are Man-Made." - Thomas Edison
If there was a white room, with nothing in it. Just a white room. And one were to be raised in this white room from birth - say if possible. And food was to be slid underneath the door. That food slid underneath that door would become the only reality. If that is the only stimulation possible would they become fond of the door with the food slid under? Would that person begin to create a ritual around that door? Perhaps start praying to the door for the food. It is quite possible that door would become a God to that individual.
"There was a time when religion ruled the world. It is known as the dark ages." - Ruth Hermence Green
There is this concept about cargo cults. It is believed that especially after World War II that Western goods or cargo were dumped on islands in the pacific and the Island's natives believed that Western goods or cargo are created by ancestral spirits. They have been known to build airstrips in the jungles in the belief that planes would land with cargo. And even build airplanes out of bamboo and other materials to pray to.

What is your God?
"One man's religion is another mans' belly laugh." - Isaac Asimov