good news vs revelation

good news

noun
  • The message of Jesus concerning the salvation of the faithful (as elaborated in the Gospels) 

  • Something or someone pleasant, fortunate, or otherwise positive. 

revelation

noun
  • A manifestation of divine truth. 

  • Something that turns out to be a great success. 

  • Something dramatically disclosed. 

  • The act of revealing or disclosing. 

  • Something that is revealed. 

How often have the words good news and revelation occurred in a corpus of books? (source: Google Ngram Viewer )