The nativity mystery โconceived from the Holy Spirit and born from the Virgin Maryโ, means, that God became human, truly human out of his own grace. The miracle of the existence of Jesus , his โclimbing down of Godโ 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.
In our worldly perceptions of Jesus, we tend to embrace the kindness of his love ('be encouraged') but not the discipline of his love ('and sin no more'). But with the whole scope of his love, or maturity in Christ, we begin relying on him for guidance where we would prefer him to walk beside us rather than behind us.