This sermon was preached the afternoon of Christmas Day 1530 by Martin Luther. His text was the familiar (for us) Luke 2:1-14, and the focus in this particular sermon was vss.10,11.
Here are some excerpts from that gospel message that will instruct and inspire our faith anew (I have slightly edited these quotations for ease of reading – not the words, just the formatting):
This is our theology, which we preach in order that we may understand what the angel wants. Mary bore the child, took it to her breast and nursed it, and the Father in heaven has his Son, lying in the manger and the mother’s lap. Why did God do all this? Why does Mary guard the child as a mother should? And reason answers: in order that we may make an idol of her, that honor may be paid to the mother. Mary becomes all this without her knowledge and consent, and all the songs and glory and honor are addressed to the mother.
And yet the text does not sound forth the honor of the mother, for the angel says, ‘I bring to you good news of great joy; for to you is born this day the Savior’ [Luke 2:10-11]. I am to accept the child and his birth and forget the mother, as far as this is possible, although her part cannot be forgotten, for where there is a birth there must also be a mother. Nevertheless, we dare not put our faith in the mother but only in the fact that the child was born. And the angel desired that we should see nothing but the child which is born, just as the angels themselves, as though they were blind, saw nothing but the child born of the virgin, and desired that all created things should be as nothing compared with this child, that we should see nothing, be it harps, gold, goods, honor, power, and the like which we would prefer before their message. For if I received even the costliest and the best in the world, it still does not have the name of Savior. And if the Turk [Muslim] were ten times stronger than he is, he could not for one moment save me from my infirmity, to say nothing of the peril of death, and even less from the smallest sin or from death itself. In my sin, my death, I must take leave of all created things. No, sun, moon, stars, all creatures, physicians, emperors, kings, wise men and potentates cannot help me. When I die I shall see nothing but black darkness, and yet that light, ‘To you is born this day the Savior’ [Luke 2:11], remains in my eyes and fills all heaven and earth.
The Savior will help me when all have forsaken me. And when the heavens and the stars and all creatures stare at me with horrible mien, I see nothing in heaven and earth but this child. So great should that light which declares that he is my Savior become in my eyes that I can say: Mary, you did not bear this child for yourself alone. The child is not yours; you did not bring him forth for yourself, but for me, even though you are his mother, even though you held him in your arms and wrapped him in swaddling clothes and picked him up and laid him down. But I have a greater honor than your honor as his mother. For your honor pertains to your motherhood of the body of the child, but my honor is this, that you have my treasure, so that I know none, neither men nor angels, who can help me except this child whom you, O Mary, hold in your arms.
If a man could put out of his mind all that he is and has except this child, and if for him everything – money, goods, power, or honor – fades into darkness and he despises everything on earth compared with this child, so that heaven with its stars and earth with all its power and all its treasures becomes nothing to him, that man would have the true gain and fruit of this message of the angel. And for us the time must come when suddenly all will be darkness and we shall know nothing but this message of the angel: ‘I bring to you good news of great joy; for to you is born this day the Savior’ [Luke 2:10-11]
And another section contains these words:
Take yourself in hand, examine yourself and see whether you are a Christian! If you can sing: The Son, who is proclaimed to be a Lord and Savior, is my Savior; and if you can confirm the message of the angel and say yes to it and believe it in your heart, then your heart will be filled with such assurance and joy and confidence, and you will not worry much about even the costliest and best that this world has to offer. For when I can speak to the virgin from the bottom of my heart and say: O Mary, noble, tender virgin, you have borne a child; this I want more than robes and guldens, yea, more than my body and life; then you are closer to the treasure than everything else in heaven and earth, as Ps. 73 [:25] says, ‘There is nothing upon earth that I desire besides thee.’
You see how a person rejoices when he receives a robe or ten guldens. But how many are there who shout and jump for joy when they hear the message of the angel: ‘To you is born this day the Savior?’ Indeed, the majority look upon it as a sermon that must be preached, and when they have heard it, consider it a trifling thing, and go away just as they were before. This shows that we have neither the first nor the second faith. We do not believe that the virgin mother bore a son and that he is the Lord and Savior unless, added to this, I believe the second thing, namely, that he is my Savior and Lord.
When I can say: This I accept as my own, because the angel meant it for me, then, if I believe it in my heart, I shall not fail to love the mother Mary, and even more then child, and especially the Father. For, if it is true that the child was born of the virgin and is mine, then I have no angry God and I must know the feel that there is nothing but laughter and joy in the heart of the Father and no sadness in my heart. For, if what the angel says is true, that he is our Lord and Savior, what can sin do against us? ‘If God is for us, who is against us?’ [Rom. 8:31]. Greater words than these I cannot speak, nor all the angels and even the Holy Spirit, as is sufficiently testified by the beautiful and devout songs that have been made about it.
Found in the Meditation on 2 Cor.8:9 by Rev. Michael DeVries (Kalamazoo PRC) in the December 1, 2018 issue of the 
Taken from 
The Three R's Blog 