We're enraptured by the gentle baby, not to mention the angels singing in the heavens and the wise men bearing gifts, but do we really grasp the enormity of this first sacrifice, where God pitches His tent among us? One Christmas, an elegant marble carving of Mary holding the infant Jesus in her arms as they flee for their lives resting for a moment on the altar brought into sharp relief for me the connection between the Nativity and the Cross.