The gospel
according to John has the central theme of bringing believers into a fuller
understanding of the life and ministry of Jesus Christ, wherefore it places
emphasis on the subject of having a new life as a prerequisite for entering
into the kingdom of God in chapter three. This life as presented in this
chapter is introduced with Nicodemus, a Jewish teacher of the Law who sought
entry into the kingdom of God but contrary to his expectation was the revelation
of becoming born-again. Jesus’ answer of becoming born-again was a revelation
i.e. a secret knowledge or a mystery, basically a divine truth. It was a
knowledge which was hidden from Judaism and still is because they do not
believe in Jesus as the Christ, the Messiah.