Birth from the Spirit

Now there was among the Pharisees a man named Nicodemus, who was one of the rulers of the Jews.  He came to Jesus by night and said to him, Rabbi, we are certain that you have come from God as a teacher, because no man would be able to do these signs which you do if God was not with him.  Jesus said to him, Truly, I say to you, Without a new birth no man is able to see the kingdom of God.

Nicodemus said to him, How is it possible for a man to be given birth when...