First Lesson (Isaiah 2)In those days, the Prophet Isaiah said: It shall come to pass in the last days, that the mountain of the LORD's house shall be established in the top of the mountains, and shall be exalted above the hills; and all nations shall flow unto it. And many people shall go and say, Come ye, and let us go up to the mountain of the LORD, to the house of the God of Jacob; and he will teach us of his ways, and we will walk in his paths: for out of Zion shall go forth the law, and the word of the LORD from Jerusalem. And he shall judge among the nations, and shall rebuke many people: and they shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up sword against nation, neither shall they learn war any more. O house of Jacob, come ye, and let us walk in the light of the LORD.
Second Lesson (Isaiah 7)
In those days: The LORD spake again unto Ahaz, saying, Ask thee a sign of the LORD thy God; ask it either in the depth, or in the height above. But Ahaz said, I will not ask, neither will I tempt the LORD. And he said, Hear ye now, O house of David; Is it a small thing for you to weary men, but will ye weary my God also? Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel. Butter and honey shall he eat, that he may know to refuse the evil, and choose the good.
Gospel (Luke 1)
At that time: The angel Gabriel was sent from God unto a city of Galilee, named Nazareth, to a virgin espoused to a man whose name was Joseph, of the house of David; and the virgin's name was Mary. And the angel came in unto her, and said, Hail, thou that art highly favoured, the Lord is with thee: blessed art thou among women. And when she saw him, she was troubled at his saying, and cast in her mind what manner of salutation this should be. And the angel said unto her, Fear not, Mary: for thou hast found favour with God. And, behold, thou shalt conceive in thy womb, and bring forth a son, and shalt call his name JESUS. He shall be great, and shall be called the Son of the Highest: and the Lord God shall give unto him the throne of his father David: And he shall reign over the house of Jacob for ever; and of his kingdom there shall be no end. Then said Mary unto the angel, How shall this be, seeing I know not a man? And the angel answered and said unto her, The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God. And, behold, thy cousin Elisabeth, she hath also conceived a son in her old age: and this is the sixth month with her, who was called barren. For with God nothing shall be impossible. And Mary said, Behold the handmaid of the Lord; be it unto me according to thy word.
A word from Saint Ambrose (from the Office at Matins, on the Gospel)
The divine mysteries are indeed hidden, according to the prophet's dictum: no man can readily know God's planning. But still, from certain deeds and precepts of our Lord and Savior we can understand that there were very weighty reasons why she who was specially chosen to give birth to the Lord should be betrothed to a man. And why was her time not fulfilled before she was betrothed? Perhaps to keep anyone from claiming that she had conceived as a result of adultery.
"And when the Angel had come to her..." Recognize the virgin by her conduct; recognize the virgin by her modesty; learn from her words; learn from the mystery. It is natural for virgins to be troubled and hesitant at every approach of a man, to be fearful, feel anxious whenever addressed by men. Let women study to imitate this example of modesty. Mary was alone inside, unseen by any man. Alone there, with no companion, no witness, only the Angel found her, lest any trivial talking disturb the angelic salutation.
The mystery behind this mandate was so great that it was not given forth from the mouth of men, but was spoken by an Angel. This is the first time that any ear has heard the words "The Holy Ghost shall come upon you." They are heard, and they are believed. Then she speaks, "Behold the handmaid of the Lord. Let it be done to me according to thy word." Look at her humility, her readiness to serve. Forming no high opinion of herself, despite the unexpected promise, she who is chosen to be the Lord's mother proclaims herself His handmaid.