They’re coming (again) – Sun Exposure “pun intended”
I wrote a previous theory that led me to this idea called Simple as “Black & White”
Which in a long drawn out text explains how the issues between Jacob and FLocke may not be good vs evil but just the opinion of polar opposites (we have talked a lot about magnets!)
I believe Jacob touched them all (the O6) so that this time (everything keeps happening over and over and he tries to change it “making progress” – read the first theory) everything could play out different. His touch caused a connection between Jack, Hurley, Sayid, Kate, Gin, Sawyer, even Locke and Sun (who are already in the present)probably to transport them all to the present at the moment he said ‘they’re coming’ so that they can stop FLocke.
The problem is that in my original theory I noticed that FLocke gave the original order to bring everyone back, so how much of a threat to him could they be.
UNLESS – he does not know about Jacob’s personal visits!!! Which can be like having received the touch of an angel, maybe they are permeable to his black smoke attacks!
Maybe he is so nice to Sun because he knows of her threat level to him. Locke is dead so… not concerned.
Either way – when THEY do come, he is going to pretend to be Locke and Sun is going to expose him (no one is going to believe Richard or the others over a living breathing walking Locke, and he owns Ben so he is not talking) Sun is the key!