During Advent we prepare to receive our Lord. God comes to us not "once upon a time", or "in a galaxy far, far away", but in a specific moment in history and in a specific place. St. Luke places his coming within historical events sot that we may know that Jesus Christ really and truly came in the flesh. Imagine: God loves us so much that He opened the heavens and came down to live among us! We celebrate his true and abiding presence even today, in every Mass. God is with us.