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."
The implication of Jesus’ illustration of new birth is that life with God in the future will require completely new equipment. Nicodemus had claimed to see something of who Jesus was by His signs. Jesus replied that no one can see God’s kingdom, the end in view, without new birth.