How is a Christian born? The new-birth of every believer is explained in the first chapter of John's Gospel pointing to a mortifying of the flesh and a relinquishing of one's own will.
John.1.12-13But 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.