First Reading
ISAIAH 7:10-14

10Again the LORD spoke to Ahaz, 11"Ask a sign of the LORD your God; let it be deep as Sheol or high as heaven." 12But Ahaz said, "I will not ask, and I will not put the LORD to the test." 13And he said, "Hear then, O house of David! Is it too little for you to weary men, that you weary my God also? 14Therefore the Lord himself will give you a sign. Behold, a young woman shall conceive and bear a son, and shall call his name Imman'u-el.

Responsorial Psalm
PSALMS 24:1-6

1The earth is the LORD's and the fulness thereof, the world and those who dwell therein; 2for he has founded it upon the seas, and established it upon the rivers. 3Who shall ascend the hill of the LORD? And who shall stand in his holy place? 4He who has clean hands and a pure heart, who does not lift up his soul to what is false, and does not swear deceitfully. 5He will receive blessing from the LORD, and vindication from the God of his salvation. 6Such is the generation of those who seek him, who seek the face of the God of Jacob. [Selah]

Gospel
LUKE 1:26-38

26In the sixth month the angel Gabriel was sent from God to a city of Galilee named Nazareth, 27to a virgin betrothed to a man whose name was Joseph, of the house of David; and the virgin's name was Mary. 28And he came to her and said, "Hail, full of grace, the Lord is with you!" 29But she was greatly troubled at the saying, and considered in her mind what sort of greeting this might be. 30And the angel said to her, "Do not be afraid, Mary, for you have found favor with God. 31And behold, you will conceive in your womb and bear a son, and you shall call his name Jesus. 32He will be great, and will be called the Son of the Most High; and the Lord God will give to him the throne of his father David, 33and he will reign over the house of Jacob for ever; and of his kingdom there will be no end." 34And Mary said to the angel, "How shall this be, since I have no husband?" 35And the angel said to her, "The Holy Spirit will come upon you, and the power of the Most High will overshadow you; therefore the child to be born will be called holy, the Son of God. 36And behold, your kinswoman Elizabeth in her old age has also conceived a son; and this is the sixth month with her who was called barren. 37For with God nothing will be impossible." 38And Mary said, "Behold, I am the handmaid of the Lord; let it be to me according to your word." And the angel departed from her.