I don't believe in an Abrahamic creator-God but I think the reading of Genesis on Apollo 8 is extremely moving. I don't interpret it as being particularly religious or Abrahamic. "Let there be light" is, IMHO, a universal notion of our strange existence in the cosmos. Maybe it means creation to some, the big bang to others. It's 3-4000 year old poetry (likely long predating the old testament in oral tradition).