John 3: 7 - 15
7 Do not marvel that I said to you, `You must be born anew.'
8 The wind blows where it wills, and you hear the sound of it, but you do not know whence it comes or whither it goes; so it is with every one who is born of the Spirit."
9 Nicode'mus said to him, "How can this be?"
10 Jesus answered him, "Are you a teacher of Israel, and yet you do not understand this?
11 Truly, truly, I say to you, we speak of what we know, and bear witness to what we have seen; but you do not receive our testimony.
12 If I have told you earthly things and you do not believe, how can you believe if I tell you heavenly things?
13 No one has ascended into heaven but he who descended from heaven, the Son of man.
14 And as Moses lifted up the serpent in the wilderness, so must the Son of man be lifted up,
15 that whoever believes in him may have eternal life."

EWTN