Say, what??!! Forgive me, I teach English, including how to write a myth, fable, allegory, etc. Abe in space with a rogue asteroid doesn’t fit the definition of allegory any more than the Nativity story. If either was submitted as an allegory, both would receive a low score. The Nativity, submitted as a myth would receive a high score. So far, the story about Abe Lincoln doesn’t qualify as allegory, fable, or myth, but might be considered for science fiction.
Any ways… I think your point may be that you believe the Nativity story is fiction of some type, and that everyone else should view it as fiction as well. Why do you believe everyone should view the Nativity as fiction? How do you benefit from considering it to be fiction? How will others benefit?