63. Nicodemus enquires about regeneration, and the Lord replies: “Verily, verily, I say unto thee, except a man be born again by water and the Spirit, he cannot enter into the kingdom of God.” S. John iii. 5. And that He might show that there is one birth according to the flesh, and another according to the Spirit, He added: “That which is born of the flesh is flesh, because it is born of the flesh; and that which is born of the Spirit is Spirit, because the Spirit is God.” S. John iii. 6. This is the full reading of the passage according to St. Ambrose, referred to above in § 59. Follow out the whole course of the passage, and you will find that God has shut out your impiety by the fulness of His statement: “Marvel not,” says He, “that I said, Ye must be born again. The Spirit breatheth where He listeth, and thou hearest His voice, but knowest not whence He cometh or whither He goeth, so is every one who is born of the Spirit.” S. John iii. 7, 8.