If so, why did Jacob sent him over there to be health ...
Just made me think, would it be possible that MiB, upon Ben killing Jacob, used the form of Jacob to speak to Hurley?
We know he used other dead folk to do his bidding so why not Jacob?
I can answer my own question to a certain extent, that Ilana said he was stuck in John Locke's form now, but since when? The exact moment Jacob was killed, the moment he took on Locke's form, only Im not so sure, has he not appeared to Claire as Christian since then?
All I am thinking is that it seems strange Jacob told Hurley to take Sayid to the temple, he must have had an idea the spring was 'spiked' with evil. So maybe MiB appeared to Hurley as Jacob to take Sayid straight to his murky pool?