Board Thread:Lore Discussion/@comment-120.28.247.29-20140227132717/@comment-25047024-20140227133249

They can't die in the "conventional" way like mortals do. Their power is just greatly diminished. Lorkhan for example "died", but his soul, divinity (Lorkhan's Heart) and body (the moons) still exist.

Most mortal souls are recycled in the Dreamsleeve when they die. By "recycled", I mean that their personality will be destroyed in the Dreamsleeve and their soul will be send to another body.

I have a theory about what happened to Alduin and his soul when he was defeated by the LDB in Sovngarde. You can read it in my blog About Aka, Lorkhan and broken Windows.