soteriology
noun
so·te·ri·ol·o·gy sō-ˌtir-ē-ˈä-lə-jē 
: theology dealing with salvation especially as effected by Jesus Christ
soteriological
sō-ˌtir-ē-ə-ˈlä-ji-kəl
adjective 
Example Sentences
Recent Examples on the Web This secular revival has blessed its adherents with a scheme of ethics, aesthetics, eschatology, and soteriology all their own. 
Tanner Greer, National Review, 17 Mar. 2020
Tanner Greer, National Review, 17 Mar. 2020 Word History
Etymology
Greek sōtērion salvation (from sōtēr savior, preserver) + English -logy — more at creosote
First Known Use
circa 1774, in the meaning defined above