Why should I have an answer to annunciate?

    Forty (enough in Hebrew) weeks before Christmas, the Archangel Gabriel received the response of Mary.  She gave her "Fiat", likely "Amen" or in Luke 1:38 Mary said, “Behold, I am the handmaid of the Lord.  May it be done to me according to your word.” 

This response echoes through time, back to another response.  At the moment of the fall, when the second person of The Most Holy Trinity sets His aim for the redemption of the World. 

Depicted in the Russian Icon "The Trinity" (also called The Hospitality of Abraham) by Russian painter Andrei Rublev in the early 15th century. In it, the second person of The Trinity places His two fingers on table, indicting the second person of The Trinity, and His contact with the table, representing that in time and space, He would enter to redeem the world by His Sacrifice.  

This icon is rich in many ways, and contains much more, but for the relation to the annunciation, we can also take that in this plan is also the door for which the second person of the Trinity would enter time and space, namely The Immaculate Conception.

The word "respond" is the hinge we should focus on.  "Re" means Back/again + "spondē" which means "solemn libation, a drink-offering."

To "Respond", we can take to mean "to offer back", the question then is WHAT is YOUR response to God's invitation to Get to "Know"  Him? ("to experience Him).

Whatever YOUR response is,  enunciate.