I don't buy the "this book was made to be understood by the people of the time" thing when it comes to the vague references you have to "interpret", if an almighty being had actually authored religious doctrine then it should specify in precise detail about things like advanced chemistry, physics, and cosmology.
I'm talking about describing atoms as being a fundamental constituent of matter by its chemical properties, their motion, electrons having wave-like properties, quantum phenomena, etc before it gets later confirmed by experiment. I'm talking about descriptions of the stars in detail, such as the constant nature of the speed of light and mass energy equivalence and four fundamental forces, etc.
If there was a religious doctrine that could be shown to be written thousands of years ago (radiological dating to verify), independent of the views of the scientists at the time (based on the literatures available), doing all that then I'd consider it quite an achievement and maybe there is some insight into the Universe from the book.
Until that day comes, it's hard to pay it much attention when the "morals" it espouses belong to another century and nothing of actual substance is written. Talking snakes and magical skydaddies in general make it difficult to believe as anything more than the fantasy of bronze-aged men to pacify and control the masses.