John 3:3-11 NIV
Jesus replied, “Very truly I tell you, no one can see the kingdom of God unless they are born again.”
“How can someone be born when they are old?” Nicodemus asked. “Surely they cannot enter a second time into their mother’s womb to be born!”
Jesus answered, “Very truly I tell you, no one can enter the kingdom of God unless they are born of water and the Spirit. Flesh gives birth to flesh, but the Spirit gives birth to spirit. You should not be surprised at my saying, ‘You must be born again.’ The wind blows wherever it pleases. You hear its sound, but you cannot tell where it comes from or where it is going. So it is with everyone born of the Spirit.”
“How can this be?” Nicodemus asked.
“You are Israel’s teacher,” said Jesus, “and do you not understand these things? Very truly I tell you, we speak of what we know, and we testify to what we have seen, but still you people do not accept our testimony.
NIV: New International Version