Jesus describes the beginning of the process that ultimately leads to salvation and the Kingdom of God. We could also say that this is what triggers a person's calling into the church. He reveals to Nicodemus that the spiritual Creator God must deliberately begin the process. It is not an event that will randomly happen when an individual shows an interest in matters of the Kingdom of God. The new creation will take some time, as the person must be taught of God, experience life in a relationship with Him, and voluntarily cooperate with Him within the relationship.
Spiritually, the Father is totally involved right from the get-go. As the ultimate Creator and Sovereign Ruler, in His salvation process, nothing happens randomly to those He calls. One of the central issues in this spiritual creation is God's sovereignty over His purposes on the one hand, and on the other, as shown by history, mankind's lack of submissive conversion. God, through His creative wisdom and powers within the relationship, must bridge this huge gap. If He is not involved in the birth process from the very beginning, framing us in His image, how can He truly be called our Father?
John W. Ritenbaugh
Leadership and Covenants (Part Eight)