A very good question, Truthstriker. You will find some people hold every word of the bible as literal, whilst others conservatively hold some parts to be metaphorical, and yet others that liberally hold that Christ himself is only symbolical! Not much help, huh?
I think there are some things, such as the Creation, that can be taken either literally or metaphorically without creating any conflict within the core thread of the biblical message. Personally, I take the Creation story as a metaphorical picture of the actual Creation. If one considers the literacy of folk in those early times when these stories were formed, then one can imagine that verbal transmission through the generations would be far more effective and resistant to change in the form of metaphors, etc.
Indeed, Jesus himself used parables for effectively conveying his teachings in forms that are easy to understand - and even easier to remember - such as the parables of seeds falling on various types of earth. These parables are not literal, but carry the identical message to the actual Truth underlying them.
Symbology is another form of speaking truths in pictures. For example, Jesus is often portrayed as a lamb, but he was not actually such an animal literally!
One could find this daunting and confusing, but, on the other hand, one could consider this an inviting, exciting journey in faith, seeking out the Truth behind the various stories, parables and metaphors. Afterall, the core requisite is faith, not understanding. Understanding is a journey through the landscape of faith. Enjoy it!
I agree with