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."

 3:14-15 And as Moses lifted up the serpent in the wilderness, so the Son of Man must be lifted up, that every one who believes in him may have eternal life. 