Shout for joy, O daughter Zion!
Sing joyfully, O Israel!
Be glad and exult with all your heart,
O daughter Jerusalem!
-- Zep 3:14-18a
Full of grace, the Lord is with thee: These two phrases of the angel's greeting shed light on one another. Mary is full of grace because the Lord is with her. The grace with which she is filled is the presence of him who is the source of all grace. "Rejoice . . . O Daughter of Jerusalem . . . the Lord your God is in your midst." Mary, in whom the Lord himself has just made his dwelling, is the daughter of Zion in person, the ark of the covenant, the place where the glory of the Lord dwells. She is "the dwelling of God . . . with men." Full of grace, Mary is wholly given over to him who has come to dwell in her and whom she is about to give to the world.
-- CCC 2676