Christmas is a time of wonder, not just because of family gatherings, festive decorations, and familiar traditions. The wonder of Christmas lies in the miracles God performed. Among them was this: the child born in Bethlehem was the eternal God entering our world in human form. As unbelievable as it seems, you can believe the miracle that Jesus is actually God in the flesh.
http://ordinaryfaith.net/sermons/god-came-to-earth/
