It is better that a man or woman fully understand with their whole mind and heart a single sentence from the Bible that contains the Word of God than they know the number of times each word occurs in the scriptures.
Better that he or she knows to turn to the Bible when in doubt than he or she show off to another Christian that they know without opening the Bible the names of each chapter.
Better to look up a passage in a shared open Bible with the one you are debating than to try to shame the other by rattling off the passage in a prideful way.
Why are you debating the person if you are not holding a Bible to refer to in your hands? Know you everything already by having memorized favorite passages?