""Let me ask you briefly why it is that people get math problems wrong, disagree on scientific laws, kill each other in war, lie etc.? Or consider this, logic is something that everyone must presuppose in order to think. Why is it that logicians and philosophers disagree on what logic is, and which are laws of logic?" ""

Because we are subjective beings, and our respective, as well as collective, understanding is varied, and therefore not universal. And neither is the bible; whether or not it in itself is perfect and without flaw, our varied perspectives affect our perception of those words.

We get math problems wrong because our minds are different; some people are better suited for mathematical thinking. We disagree on scientific laws because we all have different perspectives on the causes of things. We kill each other in war because some of us want more than what we were given. We lie because it allows us to do what we want without the consequences.

Without god or anything that goes with that belief, it is possible that we would be the exact same way that we are now. Who's to know for certain? You can't just memorize a book and claim to have a better understanding of the whys and hows.