Do you believe in possession?

Yes I do believe in possession and have seen it first hand. The Catholic church still helps people who become possessed today. You also have to remember that only those who have no faith in the Lord or those who allow the demon to enter, are the only ones who can become possessed. You should never offer your soul to anyone but the Lord. An angel would never ask for this unless it was demonic. Whoever this man really is or what ever the case may be with him, he doesn't sound right. Either seek him help or look/research his past and get out of there.