atheist...
A person who does not in religion is called an Atheist - Atheism
The person who starts a religion through the commandemnt of God is called a Prophet.
A person who converts his religion is typically referred to as a convert or a convert to the new religion.
No, that is a name of a person.
A person who is being confirmed is called a Confirmand. Plural is Confirmandi.
Non-religious. A person who does not believe in God is called an atheist. A person who doubts the existence of God is called agnostic.
A missionary
the person who brang religion in Arabia was no one! Muslims (who believe the religion called Islam) believe that Allah (god) created the religion from the beginning of time which is also written down in their holy book called the quran.
that person would be called a religiously tolerant person.
Dharma
apostate
It is called freedom of religion.