It is no wonder that Jesus' words shocked Nicodemus so much. In his view, a place in the Kingdom of the coming Messiah was guaranteed to him by the very fact of being born to Jewish parents and belonging to the chosen people. But the Lord tells him, and us, that what is born of the flesh (that is, of people, even Jewish people) is flesh, and that in order to enter the Kingdom of the Spirit one must be born of water (receive baptism) and the Spirit (receive that gift of the Spirit which, according to the word of the Lord, everyone who believes in Him receives - John 7:38).
Of course, it is easy for you and me to smile at an authoritative Jewish teacher who does not understand such simple things, since we know what the Lord Jesus is speaking about. Yes, thanks be to God, unlike Nicodemus, we understand when the Teacher speaks "of earthly things"; but does that mean we will understand when He begins to speak "of heavenly things"? If He calls birth from the Spirit "earthly," what then is "heavenly"? Perhaps we should not exalt ourselves so much over Nicodemus; beside the Lord Jesus we always remain slow-witted disciples...
