Today, in «Rejoice, full of grace» (Lk 1:28) for the first time we hear the name of the Mother of God: Mary (Archangel Gabriel’s second phrase). She has the fullness of grace and the gifts. It is said like this: "keharitoméne", «full of grace» (Angel’s greeting).
Perhaps 15 years old and alone, Mary has to answer in a way that will change the full history of mankind. Saint Bernard pleaded: «Behold, the price of our salvation is offered to you. We shall be set free at once if you consent. In the eternal Word of God we all came to be, and behold, we die. In your brief response we are to be remade in order to be recalled to life». God is awaiting an uninhibited response, and the "full of grace", representing all of us needing Redemption, responds: "génoitó", become! As of today, Mary is freely linked to the Work of her Son; today her Mediation begins. As of today, she is the Mother of those who are all one in Christ Jesus (Gal 3:28).
Benedict XVI was saying in an interview: «[I would like] to reawake the courage to make definitive decisions: they are really the only ones that allow us to grow, to move ahead and to reach something great in life. They are the only decisions that do not destroy our freedom but offer to point us in the right direction. Risk making this leap, so to speak, towards the definitive and so embrace life fully: this is something I would be happy to communicate to them». Mary: behold an example!
And Saint Joseph is also included in God’s plans: he has to accept taking Mary as his wife and name her son (cf. Mt 1:20s): Jesua, "the Lord saves". And He does it. Another example!
The Annunciation also reveals the Trinity: The Father sends the Son, incarnated by the Holy Spirit. And the Church sings: «And the Word becomes flesh today and makes his dwelling among us». His redeeming work —Christmas, Good Friday, Easter— is present in this seed. He is Immanuel, «God with us» (cf. Is 7:15). Rejoice Humanity!
The festivities of Saint Joseph and the Annunciation prepare us excellently to celebrate the Paschal Mystery.