Why The Annunciation?

Interior of the churchThe Annunciation is, in Christianity, the revelation to Mary, the Mother of Jesus by the angel Gabriel that she would conceive a child to be born the Son of God. We celebrate this event, which happened in "the sixth month" (Luke 1:26), with the Feast of Annunciation on 25 March, which as the Incarnation is nine months before Christmas. The date of the Annunciation also marked the New Year in many places, including England, where it is called Lady Day. The annunciation has been a key topic in Christian art in general, particularly during the Middle Ages and Renaissance.

In the Bible, the Annunciation is narrated in the book of Luke, Chapter 1, verses 26-38.

In the sixth month the angel Gabriel was sent from God to a city of Galilee named Nazareth, to a virgin betrothed to a man whose name was Joseph, of the house of David; and the virgin's name was Mary. And he came to her and said, "Hail, full of grace, the Lord is with you!" But she was greatly troubled at the saying, and considered in her mind what sort of greeting this might be. And the angel said to her, "Do not be afraid, Mary, for you have found favour with God. And behold, you will conceive in your womb and bear a Son, and you shall call His name Jesus. He will be great, and will be called the Son of the Most High; and the Lord God will give to Him the throne of His father David, and He will reign over the house of Jacob for ever; and of His kingdom there will be no end." And Mary said to the angel, "How shall this be, since I have no husband?" And the angel said to her, "The Holy Spirit will come upon you, and the power of the Most High will overshadow you; therefore the Child to be born will be called holy, the Son of God. And behold, your kinswoman Elizabeth in her old age has also conceived a son; and this is the sixth month with her who was called barren. For with God nothing will be impossible." And Mary said, "Behold, I am the handmaid of the Lord; let it be done to me according to your word." And the angel departed from her.

In Eastern Christianity Mary is referred to as Theotokos (Θεοτοκος = "God-bearer").
In the Islamic view of Mary, Annunciation is also cited in the Quran, in Sura 3 (Al-I-Imran – the Family of Imran) verses 45-51