A pagan or wiccan religion believes in the power of the earth and "mother nature" is one of their godesses. But many people believe in nature but dont believe that theyre pagan.
A person who believes in aliens is often referred to as an "alien enthusiast" or someone who is "believes in extraterrestrial life."
Religious.
A creationist.
I would call him a god, or at least someone who believes he is a god.
Lonely!
A Sun reader.
A Marxist
Monotheistic, or a monotheist.
A person who believes that the universe and everything in it is God, rather than created by a god or gods, is called a pantheist.
a jackass unless its a proper approch
A Blasphemer. You are not Jesus and saying you are is called "Blasphemy"
someone who believes they always have an illness and are dying even though theres nothing medically wrong