Theist is the word you would use, as opposed to atheist. Religious people can be theists as well, but theist is as general as you can get.
A person who believes that nature is god can be described as a pantheist. Pantheism is a belief system that views the universe or nature as divine and synonymous with God.
an atheist is someone who doesn't believe in a god.
A Believer =) a cristian or a jew. And Muslims.
I would call him a god, or at least someone who believes he is a god.
A scientific person :)
A person who believes that war is wrong is called a "pacifist".
A tolerant person.
conceited
Gullible.
Agnostic
Christian??
An atheist is a person who believes that there is no God. An agnostic is a person who is not sure whether or not God exists or who believes that we cannot know whether God exists or not.