Marys role in salvation, according to Cardinal Ratzinger, was anticipated in the Old Testament. She was prefigured in Eve, the Mother of the Living; in the holy women of the Old Testament, such as Sarah, Hannah, Deborah, Esther, and Judith; and in the prophetic image of the daughter Zion. Cardinal Ratzinger also considers Marys place as the embodiment of created wisdom, who faithfully received the Uncreated Wisdom of the World of God in the Incarnation.

Daughter Zion avoids the extremes of denying any biblical foundation for Marian doctrine on the one hand and fundamentalistic proof-texting on the other. Instead, the author beautifully and lucidly develops key biblical themes to help readers understand and appreciate the Mother of God.