Biblical typology
Zephaniah 3:14–17
Rejoice, Daughter Zion
14 Give praise, O daughter of Sion: shout, O Israel: be glad, and rejoice with all thy heart, O daughter of Jerusalem.
15 The Lord hath taken away thy judgment, he hath turned away thy enemies: the king of Israel, the Lord, is in the midst of thee, thou shalt fear evil no more.
16 In that day it shall be said to Jerusalem: Fear not: to Sion: Let not thy hands be weakened.
17 The Lord thy God in the midst of thee is mighty, he will save: he will rejoice over thee with gladness, he will be silent in his love, he will be joyful over thee in praise.
Douay–Rheims · Challoner revision · Sophonias 3:14–17
Why this matters
The prophet addresses Daughter Zion: the Lord is in the midst of his people. Catholic tradition sees Mary as a personal embodiment of faithful Israel welcoming the Lord. The literal addressee is Zion.