CCC 484
© Libreria Editrice Vaticana Source: vatican.va
The Annunciation to Mary inaugurates "the fullness of time", Gal 4:4. The time of the fulfilment of God's promises and preparations. Mary was invited to conceive him in whom the "whole fullness of deity" would dwell "bodily". Col 2:9. The divine response to her question, "How can this be, since I know not man?", was given by the power of the Spirit: "The Holy Spirit will come upon you." Lk 1:34-35 (Greek).
Read the full chapter 2. I Believe in Jesus Christ, the Only Son of God ¶422–682