Jesus answered him, "Most assuredly, I tell you, unless one is born anew,{The word translated "anew" here and in John 3:7 (anothen) also means "again" and "from above".} he can't see the Kingdom of God."
He said, Are you a teacher of Israel, and don't you know these things? Verily, verily, I say unto you, I am speaking of those things that I know, and I am testifying of those things that I have seen; and you do not receive my witness. If I have talked to you about earthly things, and you did not believe, how will you believe, if I tell you of heavenly things? ( John 3:10-12 )