I'm wrapping up reading an English translation of this Old Norse saga. It has been an intriguing read as I've explored the values and lifestyle of this rather foreign culture. What's really interesting is discerning the morays, ethics, and norms of the people who wrote the saga. The hero Sigmund, for example, is a great pirate and converts the Faroe Islanders to Christianity literally at swordpoint. He rises from poverty and slavery to become a great leader and conqueror. Some of these traits a modern American reader would find noble, but others would be considered unacceptable.
Yet I've found that sheer age alone does not necessarily make an ancient work alien. Back in college, I read both Beowulf and Le Morte D'Arthur, and found the latter to far more culturally confusing than the former, though Malory wrote only a few centuries ago.
Pre-modern literature can generally be a tough read because of differing literary and cultural norms, but it can be an informative exercise.
Other than the Bible, what works of pre-modern (let's say pre-Renaissance) literature have you read and enjoyed?