John 3: 1 - 8
1 Now there was a man of the Pharisees, named Nicode'mus, a ruler of the Jews.
2 This man came to Jesus by night and said to him, "Rabbi, we know that you are a teacher come from God; for no one can do these signs that you do, unless God is with him."
3 Jesus answered him, "Truly, truly, I say to you, unless one is born anew, he cannot see the kingdom of God."
4 Nicode'mus said to him, "How can a man be born when he is old? Can he enter a second time into his mother's womb and be born?"
5 Jesus answered, "Truly, truly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God.
6 That which is born of the flesh is flesh, and that which is born of the Spirit is spirit.
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."

EWTN