The nativity mystery conceived from the Holy Spirit and born from the Virgin Mary, means, that God became human, truly human out of his own grace. The miracle of the existence of Jesus , his climbing down of God is: Holy Spirit and Virgin Mary! Here is a human being, the Virgin Mary, and as he comes from God, Jesus comes also from this human being. Born of the Virgin Mary means a human origin for God. Jesus Christ is not only truly God, he is human like every one of us. He is human without limitation. He is not only similar to us, he is like us.
She [the Virgin Mary] was normal. She had already had other children. The Bible tells us that Jesus had two brothers. Virginity, as it relates to Jesus, is based on a different thing: Mary initiated a new generation of grace. A new era began. She is the cosmic bride, Earth, which opens to the heavens and allows itself to be fertilized.