Book of Micah 5:1-4a.
The LORD says : You, Bethlehem-Ephrathah, too small to be among the clans of Judah, From you shall come forth for me one who is to be ruler in Israel ; Whose origin is from of old, from ancient times.
(Therefore the Lord will give them up, until the time when she who is to give birth has borne, And the rest of his brethren shall return to the children of Israel.)
He shall stand firm and shepherd his flock by the strength of the LORD, in the majestic name of the LORD, his God; And they shall remain, for now his greatness shall reach to the ends of the earth;
he shall be peace.

Psalms 13(12):6ab.6cd.
Though I trusted in your mercy,
let my heart rejoice in your salvation.

Let me sing of the LORD,
“He has been good to me.”

Holy Gospel of Jesus Christ according to Saint Matthew 1:1-16.18-23.
The Book of the genealogy of Jesus Christ, the son of David, the son of Abraham.
Abraham became the father of Isaac, Isaac the father of Jacob, Jacob the father of Judah and his brothers.
Judah became the father of Perez and Zerah, whose mother was Tamar. Perez became the father of Hezron, Hezron the father of Ram,
Ram the father of Amminadab. Amminadab became the father of Nahshon, Nahshon the father of Salmon,
Salmon the father of Boaz, whose mother was Rahab. Boaz became the father of Obed, whose mother was Ruth. Obed became the father of Jesse,
Jesse the father of David the king. David became the father of Solomon, whose mother had been the wife of Uriah.
Solomon became the father of Rehoboam, Rehoboam the father of Abijah, Abijah the father of Asaph.
Asaph became the father of Jehoshaphat, Jehoshaphat the father of Joram, Joram the father of Uzziah.
Uzziah became the father of Jotham, Jotham the father of Ahaz, Ahaz the father of Hezekiah.
Hezekiah became the father of Manasseh, Manasseh the father of Amos, Amos the father of Josiah.
Josiah became the father of Jechoniah and his brothers at the time of the Babylonian exile.
After the Babylonian exile, Jechoniah became the father of Shealtiel, Shealtiel the father of Zerubbabel,
Zerubbabel the father of Abiud. Abiud became the father of Eliakim, Eliakim the father of Azor,
Azor the father of Zadok. Zadok became the father of Achim, Achim the father of Eliud,
Eliud the father of Eleazar. Eleazar became the father of Matthan, Matthan the father of Jacob,
Jacob the father of Joseph, the husband of Mary. Of her was born Jesus who is called the Messiah.
Now this is how the birth of Jesus Christ came about. When his mother Mary was betrothed to Joseph, but before they lived together, she was found with child through the holy Spirit.
Joseph her husband, since he was a righteous man, yet unwilling to expose her to shame, decided to divorce her quietly.
Such was his intention when, behold, the angel of the Lord appeared to him in a dream and said, "Joseph, son of David, do not be afraid to take Mary your wife into your home. For it is through the holy Spirit that this child has been conceived in her.
She will bear a son and you are to name him Jesus, because he will save his people from their sins."
All this took place to fulfill what the Lord had said through the prophet:
Behold, the virgin shall be with child and bear a son, and they shall name him Emmanuel, which means "God is with us."

Commentary of the day : Saint Bernard
The birth of the new Eve

www.ecatholic2000.com/anne/lom29.shtml

The Life of the Blessed Virgin Mary
by Blessed Anne Catherine Emmerich

4.2 MARY'S BIRTH.

Several days before the Blessed Virgin's birth Anna had told Joachim that the time was approaching for her to be delivered. She sent messengers to Sephoris, where her younger sister Maraha lived; to the widow Enue (sister of Elizabeth) in the valley of Zabulon; and to her niece Mary Salome at Bethsaida, asking these three women to come to her. I saw them on their journeys. The widow Enue had a serving lad with her; the other two women were accompanied by their husbands who, however, went back on approaching Nazareth. I saw that on the day before Anna was delivered Joachim sent his many menservants out to the herds, and among Anna's new maidservants he kept in the house only those who were needed. He, too, went out into his nearest pasture. I saw that Anna's firstborn daughter, Mary Heli, looked after the house. She was then about nineteen years old and was married to Cleophas, one of Joachim's chief shepherds, by whom she had a little daughter, Mary Cleophas, now about four years old. After praying, Joachim chose out his finest lambs, kids, and cattle, sending shepherds to take them to the Temple as a thank-offering. He did not return home until nightfall.

I saw the three cousins arriving at Anna's house in the evening. They went to her in her room behind the hearth and embraced her. After Anna had told them that the time was near for her to be delivered, they stood up and sang a hymn together: Praise the Lord God; He has shown mercy to His people, and has redeemed Israel, and has fulfilled the promise which He gave to Adam in Paradise that the seed of the woman should crush the head of the serpent,' and so on. I can no longer recite it all by heart. Anna prayed as though in ecstasy. She introduced into the hymn all the prophetic symbols of Mary. She said: The seed given by God to Abraham has ripened in me.' She spoke of the promise to Sarah of Isaac's birth and said: The blossoming of Aaron's rod is perfected in me.' At that moment I saw her as though suffused with light; I saw the room full of radiance, and Jacob's ladder appearing above it. The women were overcome with astonishment and joy, and I think that they also saw the vision. When the prayer of welcome was over, the travelers were refreshed with a slight meal of bread and fruit, and water mixed with balsam. They ate and drank standing up, and then lay down till midnight to rest from their journey. Anna did not go to bed, but prayed, and at midnight woke the other women to pray with her. They followed her to her praying-place behind a curtain.

Anna opened the doors of a little cupboard in the wall which contained a casket with holy objects. On each side were lights--perhaps lamps, but I am not sure. They had to be pushed up in their holders, and then little bits of shavings put underneath to prevent them from sinking down. After this the lights were lit. There was a cushioned stool at the foot of this sort of little altar. The casket contained some of Sarah's hair (Anna had a great veneration for her), some of Joseph's bones (brought by Moses from Egypt), and something belonging to Tobias, I think a relic of his clothing; also the little shining, white, pear-shaped goblet from which Abraham had drunk when blessed by the angel. (This had been given to Joachim from the Ark of the Covenant when he was blessed in the Temple. I now know that this blessing took the form of wine and bread and was a strengthening and sacramental food.)

Anna knelt before the little cupboard with one of the women on each side and the third behind her. She recited another hymn; I think it mentioned the burning bush of Moses. Then I saw the room filled with supernatural light which became more intense as it wove itself round Anna. The women sank to the ground as though stunned. The light round Anna took the exact form of the burning bush of Moses on Horeb, and I could no longer see her. The whole flame streamed inwards; and then I suddenly saw that Anna received the shining child Mary in her hands, wrapped her in her mantle, pressed her to her heart, and laid her naked on the stool in front of the holy relics, still continuing her prayer. Then I heard the child cry, and saw that Anna brought out wrappings from under the great veil which enveloped her. She wrapped the child first in gray and then in red swaddling bands up to her arms; her breast, arms, and head were bare. The appearance of the burning bush around Anna had now vanished.

The women stood up and received the newborn child in their arms with great astonishment. They shed tears of joy. They all joined in a hymn of praise, and Anna lifted her child up on high as though making an offering. I saw at that moment the room full of light, and beheld several angels singing Gloria and Alleluia. I heard all their words. They announced that on the twentieth day the child was to be called Mary.

Anna now went into her bedroom and lay down on her couch. The women in the meantime unwrapped the child, bathed it, and wrapped it up again, and then laid it beside its mother. There was a little woven wicker basket which could be fastened beside the bed or against the wall or at the foot of the bed, whichever was wanted, so that the child could always have its place near its mother and yet separate.

The women now called Joachim, the father. He came to Anna's couch and knelt down weeping, his tears falling on the child; then he lifted it up in his arms and uttered his song of praise, like Zechariah at John's birth. He spoke in this hymn of the holy seed, implanted by God in Abraham, which had continued amongst God's people by means of the covenant ratified by circumcision, but had now reached its highest blossoming in this child and was, in the flesh, completed. I also heard how this song of praise declared that now was fulfilled the word of the prophet: There shall come forth a rod out of the root of Jesse.' He said, too, in great humility and devoutness, that he would now gladly die.

It was only then that I noticed that Mary Heli, Anna's elder daughter, did not have sight of the child until later. Although she had become the mother of Mary Cleophas several years before, she was not present at the Blessed Virgin's birth--perhaps because, according to Jewish rules, it was not considered seemly for a daughter to be with her mother at such a time.

Next morning I saw the serving men and maids and many people from nearby gathered round the house. They were allowed to enter in groups, and the child was shown by the women to them all. Many were greatly moved, and some led better lives thereafter. The neighbors had come because they had seen in the night a glowing light above the house, and because the birth of Anna's child after long unfruitfulness was looked upon as a great favor from heaven.