They came to John, and said to him, "Rabbi, he who was with you beyond the Jordan, to whom you have testified, behold, the same baptizes, and everyone is coming to him."
So Nicodemus said, How can a man be born again when he is old? can he enter the second time into his mother's womb, and be born? And Jesus answered, Verily, I say unto you, Except a man be born of water and of the Spirit, he cannot enter the kingdom of God. For that which is born of the flesh is flesh; and that which is born of Spirit is spirit ( John 3:4-6 ).