After becoming a doctor Christian Shephard was recruited by Dharma to work on the island, probably on the medical station. In the season 3 finale Ben says: "I was one of the people that were smart enough to make sure that I didn't end up in that ditch". One of these other smart people was Christian Shephard. He joined the others early on and learned some of the island's secrets.
After the purge Christian was the one who turned the donkey wheel, so that Dharma people couldn't find the island. When he moved the island he teleported somewhere. He eventually got back to civilization, got married and had a child (Jack). I think he continued working for the island until he died.
Ben says in the season 4 finale "whoever moves the island can never come back". I think this only means coming back alive. After Christian's body ended up back to the island Jacob somehow "resurrected" him. He's not really alive but he still works for the island in this "spirit/whisper world" or whatever you like to call it.
(I personally think it has something to do with the 4th space dimension)
I believe the same thing is going to happen to Locke. He has to get off the island because "some very bad things" will happen, so he moves the island. He knows he can't get back alive, but he's willing to make the sacrifice. When the Oceanic 6 finally bring him back he will experience the same kind of resurrection as Christian Shephard did.
So I wouldn't be too worried about Locke's death.
Theory by Rhymenoceros
After the purge Christian was the one who turned the donkey wheel, so that Dharma people couldn't find the island. When he moved the island he teleported somewhere. He eventually got back to civilization, got married and had a child (Jack). I think he continued working for the island until he died.
Ben says in the season 4 finale "whoever moves the island can never come back". I think this only means coming back alive. After Christian's body ended up back to the island Jacob somehow "resurrected" him. He's not really alive but he still works for the island in this "spirit/whisper world" or whatever you like to call it.
(I personally think it has something to do with the 4th space dimension)
I believe the same thing is going to happen to Locke. He has to get off the island because "some very bad things" will happen, so he moves the island. He knows he can't get back alive, but he's willing to make the sacrifice. When the Oceanic 6 finally bring him back he will experience the same kind of resurrection as Christian Shephard did.
So I wouldn't be too worried about Locke's death.
Theory by Rhymenoceros
