Nicodemus said to him, "How can a man be born when he is old? Can he enter a second time into his mother's womb, and be born?"
In the first chapter of the gospel of John we read, "But as many as received Him, to them gave He power to become the sons of God, even to them that believe on His name, which were born not of blood, nor of the will of the flesh, nor of the will of man, but of God" ( John 1:12-13 ). Born again by the Spirit of God.