If God exists, the world needs constant warnings from God's prophets, warners, oracles, etc. There are cities of sin that need to be warned, and no one is there to warn them except ordinary people? What if these ordinary people are all prophets of God, and saints? Doesn't matter what religion they follow, or what race or culture they belong from? Good vs Evil is found in all religions of the world.
What does the word 'Prophet' mean? It only means that person is just a messenger of God! Joan of Arc was the messenger of God for France! Muhammad was the messenger of God for Arabs! Obama was the messenger and messiah of the black people of America! That's the theme, my brothers and sisters!