As a member of the OEC group, (it seems we all have to categorized) I had a thought on the age issue in the Bible. I read recently that apparently, biologists have discovered the DNA that they believe is responsible for the aging process. They have also found that DNA mutations will cause an acceleration of the aging process.
As evolution occurs due to genetic mutations, (as I understand it from reading this forum), then is it not conceivable that the evolutionary process, through genetic mutations caused the average life span to be considerably reduced from what it was a few thousand years back.
Not trying to prove anything here, but that does seem to me to be one possibility when considering the longevity of the our distant ancestors.
Everybody is entitled to my opinion.