Yes, in the limbo-church, it had been a few days for some of them, maybe thousands of years (of protecting the island) for Hurley. They were not dead while on the island. Perhaps the island was "hell" for smoke monster/man-in-black. But not for anyone else.
Ben wanted to live in limbo for awhile, possibly so he could work out some of the pathos with Rousseau and Alex and live as a "normal family" with them and get right with all the things he felt guilty for.
The big statue on the island was the Egyptian Crocodile god, Sobek, who was holding an Ahnk as an investment of additional power (cross with a loop top). Sobek wasn't exactly "good", but instead he went about righting wrongs caused by the destructive/bad gods. Instead of direct action, Sobek nudged things behind the scenes, making sure the right people were in the right place etc. Arguably much like Jacob.
Later as Egyptian mythology evolved, Sobek became an avatar of Ra, the chief sun-god when Ra was doing Sobek-like things. (sort of like father, son, holy spirit trinity as all aspects of God etc.)