Jesus' conversation with Nicodemus went to the very heart of the Mosaic law - how can one get right with God and enter God's kingdom? Jesus' answer was brief and startling: "Unless one is born anew, he cannot see God." The new birth which Jesus spoke about was not a physical birth but the beginning of a spiritual birth which is something completely new and radical, and from above, namely from God himself. Jesus said that this rebirth was necessary if one was to enter God's kingdom.
Nicodemus thought that to be born again, even spiritually, was impossible. He probably knew too well from experience that anyone who wants to be changed, can't change himself. Jesus explained that this change could only come about through the work and action of the Holy Spirit. This rebirth in the Spirit is very real and experiential, like the wind which can be felt and heard while it is visibly unseen to the naked eye.
What does it mean to be reborn in the Spirit? The new birth Jesus speaks of is a spiritual birth to a new life and experiential relationship with God as his adopted sons and daughters (Romans 6:4; 8:10-11). This new birth is made possible when one is baptized into Christ and receives the gift of the Holy Spirit.
God wants to renew all his people in the gift of new life in his Holy Spirit. This new life brings us into God's kingdom and heavenly way of life. What is God's kingdom? God's kingdom is that society of men and women who acknowledge God as their Lord and who live according to his will on earth as it is in heaven (Matthew 6:10). To be reborn is to enter that society in which God is honored and obeyed, to live as citizens of heaven and members of God's family – his sons and daughters, and to enter into possession of that life which comes from God himself, a never-ending life of love, peace, joy, and freedom from sin and the fear of death. Do you know the joy and freedom of new life in Jesus Christ?