Compare Shepherd of Hermas 26:1 and Irenaeus, Against Heresies 4.20

"... A recent article by Matthew Steenberg provides significant help on Irenaeus’s notion of scripture. He demonstrates through analysis of Irenaeus’s use of graphe that “non-delimited use of the term is always scriptural in its implication.” In other words, for Irenaeus “to refer simply to ‘the writings’ (graphai) or ̔‘the writing’ (graphe), without further qualification, is always and without exception to indicate a passage or concept drawn from a book of scriptural [or biblical] authority which Irenaeus regards as genuine to the Christian tradition according to the teaching of the apostles.” Steenberg goes on to define Irenaeus’s concept of scripture: “For Irenaeus, ‘scripture’ is that which speaks of Christ in accordance with the typological revelation of the Old Testament, in the manner set forth by the witness of the apostolic preaching.” For Irenaeus, then, scripture went beyond the Septuagint, the writings of the prophets, and those apostolic texts that he believed to be of theological weight equal to the prophets ..."