I'm not so sure about that. My theory is that Jacob is God and the other one trying to kill him is the Devil. The Devil put a plan in motion where he was able to manipulate everyone so he could get Ben into the base of the statue to kill Jacob.
However, Jacob went through the world and touched the lives of the people he would need to fix things and save himself.
Damn, it's going to be a long wait until February!
That's pretty much my theory on this as well, though I'm not sure that it's God and the Devil. I thought the statue looked kind of Egyptian, so maybe two different "Gods" or immortals or something. It seemed to me like he was there for very pivotal times in everyone's lives that helped shape who they become (influencing Kate's morals, Helping Sawyer write his letter and influencing his "Done is Done" philosophy, etc.) The only interaction I thought was strange was the talk with Jack. It didn't seem like he did anything other than get him a candy bar, but maybe I missed something, or maybe Jack was already on the right path?