It seems like there were a lot of people in the Bible who were looking for the answers to eternal life. The Rich Young Ruler of Matthew 19, The teacher of the Law in Luke 10, and then the Pharisee named Nicodemus in John 3.
Nicodemus acknowledged Jesus' origin from God. He didn't question the power of Jesus, or the relationship He must have had with God. But, He did approached Jesus, "Now there was a man of the Pharisees named Nicodemus, a member of the Jewish ruling council. He
came to Jesus at night and said, "Rabbi, we know you are a teacher who
has come from God. For no one could perform the miraculous signs you
are doing if God were not with him." In reply Jesus declared, "I tell you the truth, no one can see the kingdom of God unless he is born again." (John 3:1-3)
It's a wonderful question. What really is the Kingdom of God, and How can we know it?
Jesus said, in order to realize the Kingdom of God, once must be "born again."
There are several theological systems defining this 'born again' concept to the world.
What do you think? How does God say we can be 'born again?'