January 1st, Solemnity of Mary the Holy Mother of God
The generation of Christ was in this wise. When his mother Mary was espoused to Joseph etc. (Matthew 1:18)
St. Matthew makes it very clear that Mary is truly the Mother of Jesus, and this is affirmed also in the other Gospels many times over. Throughout the Gospels and in the Church’s Tradition, Mary is called the Mother of Jesus. Indeed, we know that (because Jesus is one divine person) Mary is truly said to be the Mother of God.
However, given that Mary is the Mother of Jesus with respect to his humanity, why do we not call the Holy Spirit the Father of Jesus? Since it was by the power of the Holy Spirit that Mary conceived, and since Mary is called the spouse of the Holy Spirit, why does the Church refuse to say that Jesus is the Son of the Holy Spirit in his humanity?