It is nothing like myth (read Eliade's Myth of the Eternal Return), rather:
- it is personal and personally involved in the creation sequence
- it is ex nihilio and makes no implict assumption that a cosmos 'just is'.
- it has specific timing and place that is continuous with our real world experience
- it uses concrete defined time units, the ones we live by and dominate our lives
- it uses real-world categories for the results of the creative words
- its creation episodes are ecologially patent
- it communicates in terms that make sense in the real world
- it identifies the critical difference between man and animals: rationality.
If you want the three big ones, for an easy rebuttal:
- it is personal: God has a clear identity, will and purpose
- it is particular: no vague generalities or symbols
- it is real: its set here and then, continuous with our world-experience here and now.