This is the day our God and King became our Brother, our Father, our guiding Spirit. Love is about being together. Christmas is the day we celebrate the joining of God and humanity in Jesus the Messiah.
So that we may know Him better, and more, He became one of us. Unlike any other creature, we do not merely exist; we must choose whether or not to become who we are intended to be. Jesus shows us how to be human.
And, like all humans, our King and Savior came to us as a child.
"Let the children come to me; do not prevent them, for the kingdom of God belongs to such as these. Amen, I say to you, whoever does not accept the kingdom of God like a child will not enter it." --Mark 10:14-15.