Depends on if you think someone's interpretation of an aspect of the Bible is right, or that God is going to grade you on your understanding of cosmology.
Now, granted, if you don't believe in the Fall you might have trouble in believing you need a Saviour, or you might blame God for the suffering in the world, but I'm convinced that there are those who believe in common descent and an old Earth but recognize their sins, accept the Redemption; believe in the Resurrection, and believe that somehow, someway something man did is ultimately responsible for the bad.
"Depends on if you think someone's interpretation of an aspect of the Bible is right, or that God is going to grade you on your understanding of cosmology."
Interpretation of the bible is always used to create doubt. The bible (NT) can be traced back to the original texts which were written, in many cases, by the witnesses of events. Interpretation really isnt an issue as hundreds of scholars have been involved with recent translations without significant changes. We are supposed to mistrust the biblical scholars translation but encourged to trust the modern liberals translation.
How does cosmology have anything to do with this? Again, if you read the bible its pretty clear what God is going to grade us on.