At the end of John 3:8, Jesus says, “So it is with everyone who is born of the Spirit.”
For the first time I recognized that Jesus is not speaking about the Holy Spirit, but about those born from above through water and the Spirit. The commentaries aren’t much help in explaining how we are like the wind. That seems to be the point. It’s part of the mystery of some believing the Gospel and others reject it. It’s like trying to find the origin of the wind or where it goes.
When someone is baptized you don’t see anything happening, just the parents, sponsors and someone dressed in a robe talking and applying water. Yet, we believe that that person has passed from death to life eternal. Where is the evidence? When we go to communion and take the bread and wine from the hand of a human being, we are also receiving Jesus body and blood, for the forgiveness of sins. But where is the evidence? We don’t see sins being zapped. The person doesn’t look any different. Yet we trust that forgiveness, life and salvation comes with communion.
The only evidence of a change is in our life. Nicodemus indicates he has stepped out of the darkness into the light of Christ when he later defends him in the Sanhedrin and along with Joseph of Arimathea, see to the burial of Jesus. So it is with everyone who is born of the Spirit.