We have said that during our Saviour's ministry on earth, few of the higher class of Jews became His disciples; but there was one remarkable exception, in the case of a man named Nicodemus, whose conversation with our blessed Lord is particularly instructive. We read in the Gospel of St. John, "There was a man of the Pharisees, named Nicodemus, a ruler of the Jews: the same came to Jesus by night, and said unto him, Rabbi, we know that thou art a teacher come from God: for no man can do these miracles that thou doest, except God be with him." Nicodemus was a man of sense, and the miracles of Jesus had convinced him; for he felt certain that no one but the Son of God, the Messiah, could do such things. He was willing to acknowledge this; but afraid of the ridicule or reproaches of his friends, he came to Jesus by night, that no man might know of his visit. Christ, who is very merciful, did not refuse to listen to Nicodemus, but began to show him that there must be some proof of faith in a holy life. So when Nicodemus declared his belief that Jesus came from God, "Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God." Nicodemus, not understanding the real meaning of these words, "saith unto him, How can a man be born when he is old?" meaning that it was impossible for a man who had been born many years before, again to become a baby. "Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God. That which is born of the flesh is flesh; and that which is born of the Spirit is spirit." Jesus meant that, as to the body or flesh, no man could of course be born again; but that by the help of the Holy Spirit, the man's nature might be changed so that he would become holy, trying in all things to please God: such a change in the character, temper, and disposition might be compared to a new birth; and without such a complete change, no one could enter into the kingdom of God. Such teaching might well cause Nicodemus great surprise; and Jesus said unto him, "Marvel not that I said unto thee, Ye must be born again. The wind bloweth where it listeth, and thou hearest the sound thereof, but canst not tell whence it cometh, and whither it goeth: so is every one that is born of the Spirit." In these words our Saviour warns Nicodemus, that a man's conduct only can show whether he has been born of the Spirit: just as we cannot see the wind, but we know that it blows, because we hear the noise it makes, and see its effects in the way the trees and other things are blown about.