This is a question mainly for those who are christian as I myself am not:
To what extent is Christianity contingent on a belief in the book of Genesis. I know there are some Christians who accept that the creation story is a myth, and maybe the Adam and Eve story too. But that puzzles me. Surely the idea of original sin, that we needed to be redeemed by Jesus Christ are all based on the beginning chapters of Genesis? Disbelieve that and there is no foundation to the value put on Jesus supposed sacrifice as Paul described.
To me at least, the creation story, Adam and Eve and a talking snake are a bit of a weak fanciful idea to be the foundation of ones sense of personal salvation.