You have to have the eyes to see and the ears to hear --- God's eyes and ears. Each of us has a belief system which distorts this. What we "see" and "hear" is altered or shaped by the prism of our belief system. If we step back from that belief system, then we can begin to truly see what is there. Humility is borne from the knowing that we cannot understand many things --- we have stepped back from our belief system. Humility then provides the opening for God to reveal Himself to us.