God the Father does what
all new parents do:

He shows off the baby. Parents come with that little bundle in the baby carrier as if to say, "Look what we got. Look what we did." People flock around. They ooh and aah and compete to touch and hold as if they've never seen anything like it before. People have been having babies for thousands of years. Babies are nothing new. But the baby is always new. Babies never cease to be a wonder, a miracle, a mystery. Some of the wonder spills over to the parents. The parents show off the baby, but the baby also shows off the parents. People see the parents in a new light. It is no less the case with God. At Christmastime in the Holy Communion liturgy, the presiding minister sings, "In the wonder and mystery of the Word made flesh you have opened the eyes of faith to a new and radiant vision of your glory, that, beholding the God made visible, we may be drawn to love the God whom we cannot see." God shows off the baby. The baby shows off God.

God the Father does what all new parents do, 
but does it in a way no new parent can:

One set of new parents in the neighborhood erected a pair of giant plywood storks in their front yard to show off to the neighborhood the arrival of their twins. Actually, as you might have guessed, it was the father who erected the plywood storks. His wife bore the twins. The storks were him saying, "See, I can do something, too." Mary had the baby. God lowered a star into the heavens, God's front yard, to show off Jesus' birth to the cosmos, God's neighborhood.

Evangelical Lutheran Church in America