Nobody can ever fully understand everything there is to know about the bible. When your life on earth is through and your walking on streets of gold, Then you will have the complete knowledge. My father and grandfather both pastor churches, and I have heard them say many times that they learn something knew nearly every time they open the book. It`s a funny thing that you can read the same book of the bible 10 times and all 10 times pick up somethign new.