Friends, we see in our Gospel reading that the Holy Spirit’s principal sign is love. The night before he died, Jesus told his friends the deepest truths. He spoke of himself, his Father, and the Holy Spirit.
The Holy Spirit is the love that connects the Father and the Son. From all eternity, he is breathed back and forth between the Father and the Son, and hence he is nothing but love. When therefore he comes to dwell in you and me, he turns us to the path of love. “On that day you will realize that I am in my Father and you are in me and I in you. Whoever has my commandments and observes them is the one who loves me. And whoever loves me will be loved by my Father.”
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 and the Son. Therefore, if we wish to know the creaturely realm in all of its complexity and multiplicity, in both its coming and going, we must immerse ourselves in the stream of the Spiritus Sanctus.