“The credit-card-size papyrus, which Dr. Smith dates from around A.D. 250 to A.D. 350, contains about six lines of the Gospel of John on one side and an unidentified Christian text on the other. If Dr. Smith’s analysis is correct, it is the only known Greek New Testament papyrus from an unused scroll rather than a codex, the emerging book technology that early Christians, in sharp contrast to their Jewish and pagan contemporaries, preferred for their texts.”