No priest, no theologian stood at the manger of Bethlehem. And yet all of Christian theology has its origin in the wonder of all wonders: that God became human. Holy theology arises from knees bent before the mystery of the divine child in the stable. Without the holy night, there is no theology. “God is revealed in flesh,” the God-human Jesus Christ – that is the holy mystery that theology came into being to protect and preserve. How we fail to understand when we think that the task of theology is to solve the mystery of God, to drag it down to the flat, ordinary wisdom of human experience and reason! Its sole office is to preserve the miracle as miracle, to comprehend, defend, and glorify God’s mystery precisely as mystery.
Source: God Is In the Manger: Reflections on Advent and Christmas