so·te·ri·ol·o·gy /soˌtɪriˈɑləʤi/
  so·te·ri·ol·o·gy n.
  1. A discourse on health, or the science of promoting and preserving health.
  2. Theol. The doctrine of salvation by Jesus Christ.
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  soteriology
       n : the branch of Christian theology that deals with salvation
           as the effect of a divine agency