“He will be great and will be called Son of the Most High, and the Lord God will give him the throne of David his father, and he will rule over the house of Jacob forever, and of his Kingdom there will be no end.” (Lk 1:26-38)
https://bible.usccb.org/bible/readings/122022.cfm
In this final part of Advent as we build up to Christmas, we hear the Infancy narratives in the gospels of Matthew and Luke. Today, in the middle of the Annunciation story, the angel suddenly breaks into the Hallelujah Chorus, which appropriately comes not from the Christmas section of Händel’s Messiah, but rather from the Easter section.