***it's the spiritual meaning of His words that have significance, not His endorsement of pre-medieval science***
Did Christ literally rise from the dead or was that "spiritual" to?
The crucial difference between this and a literal six-day Creation is that God has provided us with direct physical evidence that the latter is not a literal fact. The revelation that nature provides us is just important as what Scripture provides. Unless you believe that Satan is responsible for planting all the geological, cosmological, paleontological, morphological, biogeographical, and genetic evidence that contradicts the archaic creationist model of the universe.
If the story of a talking serpent and the two sacred trees in a secret garden isn't an obvious example of a Parable, I don't know what is.