death deity

Many cultures have incorporated a god of death into their mythology or religion. As death, along with birth, is among the major parts of human life, these deities may often be one of the most important deities of a religion. In some religions with a single powerful deity as the source of worship, the death deity is an antagonistic deity against which the primary deity struggles. The related term death worship has most often been used as a derogatory term to accuse certain groups of morally-abhorrent practices which set no value on human life, or which seem to glorify death as something positive in itself.
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