The New Testament witnesses were fully aware of the background against which the resurrection took place.
Josh McDowellMany people entertain the idea that Christianity,like almost any other religion,is basically a system of beliefs-you know, a set of doctrines or a code of behavior, a philosophy, an ideology. But that's a myth. Christianity is not at all like Buddhism or Islam or Confucianism. The founders of those religions said (in effect), 'Here is what I teach. Believe my teachings. Follow my philosophy.' Jesus said, 'Follow me'(Matthew 9:9). Leaders of the world's religions said, 'What do you think about what I teach?' Jesus said, 'Who do you say I am?'(Luke 9:20)
Josh McDowell