I tell you the truth, no one can see the kingdom of God unless he is born again. Yet, in reading Jesus conversation with Nicodemus in John 3, one is drawn to the mysterious statement of Jesus cited above. I tell you the truth, no one can enter the kingdom of God unless he is born of water and the Spirit.
Flesh gives birth to flesh.
Only then can one enter the kingdom of God. There is no doubt that John has in mind the miraculous nature of Jesus own birth as he offers his account of the life of our Lord. Jesus was born of a virgin via the agency of the Holy Spirit . But this is a physical impossibility, as Nicodemus pointed out. The whole experience of the Christian faith is a pneumapsychosomatic reality.