The shepherds in the fields were open to learning, surprising, perhaps. But they were open to hearing and learning from those angels. Are we open to learning? Are we humble enough to embrace the reality that we have much to learn, that we *always* have much to learn? No matter how many graduate degrees we have, no matter how many books we read, no matter how erudite we believe ourselves to be, our own knowing is paltry next to God's knowing.
So, as God told St. Augustine, "pick up and read" the Bible! Enter into prayer with curiosity and humility. Encounter the world, and people in it, with a deep curiosity and interest.