It is an ongoing process. Many passages in the Bible indicate that being born again spiritually will be just as much a step by step process as physical conception, gestation, birth, growth, and development. Only by completing this process can we be sure to enter the Kingdom of God. One reason why being born again must be a gradual process is that it involves a complete change of character. New Knowledge Rebirth does not take place through a blind leap of faith, but through gradual education, study and enlightenment.
Truth is the tool of change, the means to a new life.
In malice be children, but in understanding be adults. Most important of all is the understanding of God. If God's nature is a mystery to us, we can hardly say that we are born again, or that we are His sons. Knowing God goes hand in hand with being born from Him. The pure in heart shall see God.