

It's all very deep-lore stuff, but the general consensus is that the references to events that occurred in later Dead Space games means EA is planning to remake those games, too-or is at least open to the idea. "Order the living shepherd the dead" is taken to mean creating necromorphs and bringing them to convergence, while the second stanza is believed to be a reference to Tau Volantis, a planet in Dead Space 3 that was turned into a frozen wasteland eons ago in an attempt to halt a convergence event.

Several people in the thread believe the opening lines are a reference to Oracles, a mysterious group of high-ranking cultists seen in the Dead Space 2: Severed DLC whose origins and motives are unknown. While the content of the message is easy to figure out, what it actually means is a different matter.
