I don't have a theory yet on what's going to happen. But whatever does happen has to happen and Jacob knows it. He goaded Ben into killing him by responding to Ben's, "What about me? with "What about you?". This led me to believe that Ben is insignificant to Jacob. Jacob knows that he is just Smokey Locke's pawn. His loophole. I think he's always known it which is why he never let Ben see him.

Ben asks Smokey Locke why Jacob didn't fight back. Jacob knows what's going to happen and that he has to die. Just like Richard told Locke that he had to die.

I'm just rambling out random thoughts now. I'll stop.