gospel vs unbelief

gospel

verb
  • To instruct in, declare, or communicate the gospel; to evangelise. 

noun
  • An account of those aspects of Jesus' life, generally written during the first several centuries of the Common Era. 

  • A message expected to have positive reception or effect, one promoted as offering important (or even infallible) guiding principles. 

  • The first section of the Christian New Testament scripture, comprising the books of Matthew, Mark, Luke and John, concerned with the birth, ministry, passion, and resurrection of Jesus. 

  • That which is absolutely authoritative (definitive). 

  • Gospel music. 

  • The teaching of Divine grace as distinguished from the Law or Divine commandments. 

unbelief

noun
  • An absence (or rejection) of belief, especially religious belief 

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