the late second or the fourth century. Various features of the document make it something of an odd duck in either period, and its value has probably been overrated. From the mid-third century, Origen offers another snapshot. His categories of “acknowledged” books (four Gospels, fourteen Pauline Letters, Acts, 1 Peter, 1 John, Jude, Revelation) and “disputed” books (James, 2 Peter, 2–3 John) embody the concept of a canon (canon 2), even as they reveal that the question of boundaries was still fluid