demythologise

verb
  1. to remove mythical or legendary elements from a story, belief, or historical account in order to reveal the underlying truth or reality
  2. Usage: British spelling; American equivalent is 'demythologize'; often used in religious, literary, and historical contexts
  3. to interpret religious texts or doctrines by removing supernatural or mythological language to extract their rational or existential meaning
  4. Usage: theological and academic usage; associated with biblical criticism and modern theology

Examples