Revelation, classically understood. noun. Concealed information, inaccessible to unaided human intelligence, requiring supernatural disclosure through oracular and literary media, and occurring long ago. There are three problems with the classic idea of revelation, expressible in three sets of questions.
Conversations about religion in art, and more precisely religious meanings in art are tricky. Lyricists obviously generate those conversations by their use of religious imagery but the relationship between music and (perceived) spiritual meaning has at least as much or more to do with audiences as artists.