Friends, after speaking of being born of the Spirit, Jesus says in today’s Gospel: "No one has gone up to heaven except the one who has come down from heaven, the Son of Man. And just as Moses lifted up the serpent in the desert, so must the Son of Man be lifted up, so that everyone who believes in him may have eternal life."
Genesis tells us that, at the beginning, the Spirit of God hovered over the surface of the waters, drawing order from chaos. Creation is nothing but the overflow from the intensity of Trinitarian love. Thus, all things—to the very root of their existence—flow from and are marked by the Spiritus Sanctus (Holy Spirit). He is their ground, their secret origin, their principle.
And more to the point, the Holy Spirit is the end of all things. God has created a dynamic universe, moving restlessly and relentlessly toward a goal, and this goal has been disclosed to us in Christ: the sharing in the love between the Father, who has given his only Son to the world, and the Son, who has offered himself back to the Father.