"My theory if the Angels could disguise themselves as Humans? It would been easy for a Fallen Angel aka a Demons to disguise themselves as Aliens."
Yeah, "if." My question is, why? What the hell would the point be of masquerading around as a little green man be?
"I'd found out that an Alien's name is Anshar same as a Babyleon god. That's a prove that there is a spiritual world."
What?
"Some few people think that Aliens created this world. What up with that?
Uh, nooooo. It's an option as to how life (not the planet you moron) originated. As far as I know it's not actually taken seriously by any real scientists as there's no evidence of it and abundant evidence that life on this planet did not need a helping hand, alien or otherwise, to take hold.
"I don't mean to provoke anyone. I'm just sharing my faith that's all."
This is stupid. It's like being accosted by some religious loudmouth on the street who tells you you're going to hell and then adds, "I don't mean to provoke anyone. I'm just sharing my faith that's all." Sorry, that just doesn't cut it. You're being obnoxious and you should stop posthaste.
"Is believe in Christianity is a sin?"
Not unless you're a Muslim. Or a Jew. Or innumerable other religions that are contrary to Christianity.
"I bet that you want me to kill myself and burn in hell too RIGHT?"
No, I want you to take remedial courses in general usage of the English language, typing and art 101.
