From this child, a new light issues forth, shining in the darkness of the night, as we can see in so many paintings depicting Christ’s Nativity. Henceforth, it is from him that blessing comes, from his name – Jesus, meaning “God saves” – and from his human face, in which God, the almighty Lord of heaven and earth, chose to become incarnate, concealing his glory under the veil of our flesh, so as to reveal fully to us his goodness (cf. Tit 3:4). 

The first to be swept up by this blessing was Mary the virgin, the spouse of Joseph, chosen by God from the first moment of her existence to be the mother of his incarnate Son. She is the “blessed among women” (Lk 1:42) – in the words of Saint Elizabeth’s greeting. Her whole life was spent in the light of the Lord, within the radius of his name and of the face of God incarnate in Jesus, the “blessed fruit of her womb”. This is how Luke’s Gospel presents her to us: fully intent upon guarding and meditating in her heart upon everything concerning her son Jesus (cf. Lk 2:19, 51). The mystery of her divine motherhood that we celebrate today contains in superabundant measure the gift of grace that all human motherhood bears within it, so much so that the fruitfulness of the womb has always been associated with God’s blessing. The Mother of God is the first of the blessed, and it is she who bears the blessing; she is the woman who received Jesus into herself and brought him forth for the whole human family. In the words of the liturgy: “without losing the glory of virginity, [she] brought forth into the world the eternal light, Jesus Christ our Lord” (Preface I of the Blessed Virgin Mary).

Mary is the mother and model of the Church, who receives the divine Word in faith and offers herself to God as the “good soil” in which he can continue to accomplish his mystery of salvation. The Church also participates in the mystery of divine motherhood, through preaching, which sows the seed of the Gospel throughout the world, and through the sacraments, which communicate grace and divine life to men. The Church exercises her motherhood especially in the sacrament of Baptism, when she generates God’s children from water and the Holy Spirit, who cries out in each of them: “Abba, Father!” (Gal 4:6). Like Mary, the Church is the mediator of God’s blessing for the world: she receives it in receiving Jesus and she transmits it in bearing Jesus. He is the mercy and the peace that the world, of itself, cannot give, and which it needs always, at least as much as bread.

[Pope Benedict, homily, 1 January 2012]