In the first chapter of Luke’s Gospel, we read of Mary’s visit to her relative Elizabeth, the mother of John the Baptist. When Mary entered the house, John leaped for joy in his mother’s womb. Elizabeth then says of Mary:
Blessed is she who has believed that what the Lord has said to her will be accomplished – Luke 1:45
This is the text-book definition of faith – believing God will do what He’s said He’ll do.
Christmas is about God fulfilling His promise to send a Savior. And, just as He came as promised all those years ago in Bethlehem, He will come again to rule and reign over all the earth.
Christmas is about looking back to the Incarnation but also forward to the Parousia, the Glorious Appearing.