A hymn from my childhood (well, it's actually a bit older than me, but about as old as I feel today) in celebration of the glorious Feast of the Nativity:

"Let Us All with Gladsome Voice"

1. Let us all with gladsome voice
Praise the God of heaven,
Who, to bid our hearts rejoice,
His own Son hath given.

2. To this vale of tears He comes,
Here to serve in sadness,
That with Him in heaven's fair homes
We may reign in gladness.

3. We are rich, for He was poor;
Is not this a wonder?
Therefore praise God evermore
Here on earth and yonder.

4. 0 Lord Christ, our Savior dear,
Be Thou ever near us.
Grant us now a glad new year.
Amen, Jesus, hear us!

The Lutheran Hymnal (1941) Hymn #97
Author: unknown, 1632
Translated by: Catherine Winkworth, 1863, alt.
Titled: "Lasst uns alle froehlich sein"
Tune: "Lasst uns alle"
1st Published in: _Gesangbuch, Ander Teil_ Dresden, 1632

The fourth verse has long been my favorite prayer for the last week of the old year and the first week of the new. (The tune's available -- and, as usual, played too slowly -- here.)

A most blessed Christmas to you and yours!