The Dead and The Undead

[Formendacil]

We don't know much (really, do we know anything?) about the worship of Sauron in Middle-earth beyond that he WAS worshipped, but I think that some comparative "religious studies" to what we know of the Melkor-worship he introduced in Númenor would, in fact, suggest that Sauron-worship in Middle-earth was heavily tied to Death and the fear of death, which, ironically, seems to have involved deaths and accelerated dying.