To think that I have thought it all is a shame

I am ashamed. There is so much that I do not understand or know. I look highly upon myself as I can answer the bible questions, when shamefully I am not able to understand or comprehend this life. As in Job God asks if we are the ones that created, if we are the ones that made it all; I can see how stupid I really am. I am a speck of dust compared to Him. As I have been reading Surprised by Joy by C.S. Lewis, I find my head feeling like it is exploding from the tension of trying so hard to understand what he is saying! It has been a while since I have come to this point, and have gone wow, I don't know anything!! Yes, I know the Bible answers and the basic faith, and maybe that is all I NEED to know, but when I look upon myself as a know-it-all I am a shame. There is so much knowledge, so many different religions and philosophies out there, and for me to think I understand it all already is like saying that I am God, I have it all figured out. What a pity.