Please read the passage before the commentary.
There is a saying that whenever God wants somebody to do a job, God gives the person all that is necessary for the job. It is also said that God does not call qualified person but rather qualifies those whom God calls. So, we ask what qualities the Mother of God would need to successfully carry out the duties and responsibilities of being a mother of God’s Son. Monarchies greatly prefer that their offspring marry the children of other monarchs and frown on their marrying commoners. God, as king, however, can take a commoner and make her a queen mother.
The gospel has the angel address her as one “full of grace”, or “highly favored one”. The Greek word describes someone who has received a charism or gift. It describes Mary as a charismatic person. In Mary’s case the charisma or gift was to receive in her womb the holiness of God’s Son.
Holiness will surround everything about the birth of this Son of the Most High, God. What would Mary bring to this undertaking? In one sense, she would bring nothing, and, in another sense, she would bring everything. She would receive all that God had in mind for her. The message to Mary was that God had looked upon her with favor and grace, that God had chosen her, and that she would become the mother of God.
Since God had chosen Mary before she was conceived in her mother’s womb. We could call the beginning of her life in her mother’s womb a divine conception, but this would sound no better than pagan mythology’s accounts of women who somehow conceived gods. With Mary, however, it is that she was called to be the mother of the real God, the eternal and all-powerful God and the creator of the universe. Catholics call this miraculous beginning of Mary in her mother’s womb, not a divine conception, but an immaculate conception, a holy beginning for one destined to be mother of the all-holy one. It all points to what God has done to make Mary qualified to be the mother of the Most High.