You make a good point. The bibles purpose is not that of a historical textbook, although it has been shown to be very accurate in that sense.
It is also not a science textbook, but here again it has been shown to be accurate, even in some areas where the author had no way of knowing the validity of what he wrote. A good example in what is found in Isaiah 40:22 states,"There is one dwelling above the circle of the earth.......". This was written close to 2000 years before scientists were capable of verifying this as a fact, that the earth is a circle or round. How did he know is the big question. The bible also speaks of there being other planets when man had no telescopes to verify this as a fact. It makes you wonder how they knew.
It is also not a science textbook, but here again it has been shown to be accurate, even in some areas where the author had no way of knowing the validity of what he wrote. A good example in what is found in Isaiah 40:22 states,"There is one dwelling above the circle of the earth.......". This was written close to 2000 years before scientists were capable of verifying this as a fact, that the earth is a circle or round. How did he know is the big question. The bible also speaks of there being other planets when man had no telescopes to verify this as a fact. It makes you wonder how they knew.