A couple of video frames after Kate speaks in the Season 4 Sneak Peek Video, many images flash by. I freeze-framed the video, and saw the following two images. One has someone looking through a broken window, which I think is likely the shack which Ben brought Locke to. The next image was of Christian (Jack’s father) sitting in a chair. The chair looks like Jacob’s chair.
What could this mean? Christian is Jacob?? No, I don’t think that’s likely. I think it’s a lot more probable that Jacob is manifesting himself as Christian.
As for who or what Jacob is, that remains to be seen.
Jacob is everybody’s father
dont forget Hurley sees dead people, not becuz hes got a sixth sense, hes crazy