Dr. Ronnie Wolfe
Jesus' answer to Nicodemus' question in verse four is divine and
can be only divine. Nicodemus asked whether he would need to go back
into his mother's womb and be born. I think he knew that was impossible,
but he was entering into a dialogue with Jesus and thinking logically
to see how Jesus would answer.
Jesus' answer was that he must be
born of water and of the Spirit. The water birth, as we shall learn in
the next verse (verse six), is the natural birth: "that which is flesh."
The birth of the Spirit is the work of grace in our hearts that the
Spirit of God brings about when he convicts us of our sins, grants us
repentance, and gives us faith, and we turn from our sins and believe on
the Lord Jesus Christ.
As a result of this new birth, we have an
old man (that which is born of the flesh) and the new man (that which is
born of the Spirit).
Thank God for the new birth, since without it we would still be completely in the flesh and not in the Spirit.
Notice this revealing verse: Rom. 8:9 But
ye are not in the flesh, but in the Spirit, if so be that the Spirit of
God dwell in you. Now if any man have not the Spirit of Christ, he is
none of his.