What the hell IS Christian? ( I promise no spoilers)

I had been waffling over the is Christian the MIB in disguise or an agent of team Jacob, then it occured to me, he is neither. Maybe he is a representing a third entity’s presence. maybe Jacob and MIB have both been sort of corrupted and can only see things from their point of view ( you know that whole saying about every story having 3 sides?) and convinced that they are right but they have forgot the true meaning of this game they are playing. I am going to pissed if they dont answer this question. I think it is very important to essence of the story because the writers have been painstakingly misleading us about Christian and just by mere blood line he is very important, having three relatives on the island.
I think that 3 is a very important number, especially in religon. I think someone mentioned this awhile ago but I was to lazy to look, but anyway you know the whole the father, the son and the holy spirit, but really (depending in your brand of christianity) he is the same person just different forms to serve different purposes. I just dont hope it turns out to be like devil advocate, I read a really interesting theory the other day, and when it came out it was one of my fave movies at the time, but it never really dawned on me the stark similarities (or maybe I am just suffering from aphopenia) but I was disappointed in the way the movie ended (spoiler alert: the main character defeats the devil but the loop just starts all over again). My grandmother use to say that pride is the one sin you cant beat and that was pretty much a running theme throughout the movie. Jack has that problem, it manifests itself in his need to fix things. The need to prove himself to his father that he is better than him. Even the profession he choose, high stakes with someone’s life on the line, and you are the only thing between them and death. It is a fine line between pride and vanity, so while we think that maybe Jack has come over to being a man of faith, maybe all he saw was something that proved to him that he had what it takes.

I am just babbling because the site has been down for what felt like an eternity. So anyway, as usual, feel free to chime in.