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."
True, no person has ever gone up into heaven to learn all about God and his ways, but Jesus Christ has come down from heaven and shown people what God is like. He is God’s gift to the world. His death on the cross is God’s way of salvation, and if people under condemnation turn to him and believe, they will have eternal life (John 3:13-15).