All of these point to the single most significant act of God in fulfilling His divine promise to bring all persons back to Him...that of God taking human flesh and dwelling, teaching and ultimately dying and rising again so that His Spirit may fill the world and enact it's salvation for all time. And how is this action of God carried into the world? Through the 'Yes' of the most innocent, beautiful arc in salvation history, Mary herself who carried the fruit of God's promise within her own body as a gift for the world!
Amazing!
A little more about this very special feast that is the First of only two Holy Days of Obligation (Days that are just as important for worship as Sundays!) in our Church taken from Churchyear.net;
In the 4th and 5th centuries debates about the nature of Christ raged in the Church. The debate was about the relationship of Christ's divine and human natures. At the center of this debate was a title of Mary. Since at least the 3rd century, Christians had referred to Mary as theotokos, meaning "God-bearer." The first documented usage of the term is in the writings of Origen of Alexandria in AD 230. Related to theotokos, Mary was called the mother of God. Referring to Mary this way was popular in Christian piety, but the patriarch of Constantinople from 428-431, Nestorius, objected. He suggested that Mary was only the mother of Jesus' human nature, but not his divine nature. Nestorius' ideas (or at least how others perceived his arguments) were condemned at the Council of Ephesus in AD 431, and again at the Council of Chalcedon in AD 451. The Church decided that Christ was fully God and fully human, and these natures were united in one person, Jesus Christ. Thus Mary could be called "mother of God" since she gave birth to Jesus who was fully divine as well as human. Since this time, Mary has been frequently honored as the "mother of God" by Catholics, Orthodox, and many Protestants.
The Solemnity of Mary Mother of God falls exactly one week after Christmas, the end of the octave of Christmas. It is fitting to honor Mary as Mother of Jesus, following the birth of Christ. When Catholics celebrate the Solemnity of Mary Mother of God we are not only honoring Mary, who was chosen among all women throughout history to bear God incarnate, but we are also honoring our Lord, who is fully God and fully human. Calling Mary "mother of God" is the highest honor we can give Mary. Just as Christmas honors Jesus as the "Prince of Peace," the Solemnity of Mary Mother of God honors Mary as the "Queen of Peace" This solemnity, falling on New Year's Day, is also designated the World Day of Peace.
From Evening Prayer of the Liturgy of the Hours;
Father,
Source of light in every age,
the virgin conceived and bore your Son
who is called Wonderful God, Prince of Peace.
May her prayer, the gift of a mother's love,
be your people's joy through all ages.
May her response, born of a humble heart,
draw your Spirit to rest on your people.
Grant this through Christ our Lord.
Amen
Peace and God Bless