Luke 1:28-29 “[Gabriel] went to [Mary] and said, ‘Greetings, you who are highly favored! The Lord is with you.’ Mary was greatly troubled at his words and wondered what kind of greeting this might be.”
Maybe Mary was just confused by how the angel addressed her, but I think we’re all “troubled” when God chooses to reveal Himself, especially when we’re reminded that He is “with us.” I, all too often, tend to think of God as someone in the wings of life, someone to talk to in time of trouble, someone to worship during specified times, someone to celebrate but still basically incomprehensible, basically unrevealed.
But, at Christmas, God pulls back the curtain and says, “Immanuel! The Lord is with you!” The mostly hidden, the incomprehensible, the incommensurate God is revealed–no, more than that–is present in you. How frightening! And yet, how essential to the dialog that is the Christian life.