SCM Theological Commentary on the Bible
Series Preface
by R. R. Reno

Near the beginning of his treatise against Gnostic interpretations of the Bible, Against the Heresies, Irenaeus observes that Scripture is like a great mosaic depicting a handsome king. It is as if we were owners of a villa in Gaul who had ordered a mosaic from Rome. It arrives, and the beautifully colored tiles need to be taken out of their packaging and put into proper order according to the plan of the artist. The difficulty, of course, is that Scripture provides us with the individual pieces, but the order and sequence of various elements are not obvious. The Bible does not come with instructions that would allow interpreters to simply place verses, episodes, images, and parable in order as a worker might follow a schematic drawing in assembling the pieces to depict the handsome king. the mosaic must be puzzled out. This is precisely the work of scriptural interpretation.
Origen has his own image to express the difficulty of working out the proper approach to reading the Bible. When preparing to offer a commentary on the Psalms he tells of a tradition handed down to him by his Hebrew teacher:
The Hebrews said that the whole divinely inspired Scripture may be likened, because of its obscurity, to many locked rooms in our house. By each room is placed a key, but not the one that corresponds to it, so that the keys are scattered about beside the rooms, none of them matching the room by which it is placed. it is a difficult task to find the keys and match them to the rooms that they can open. We therefore know the Scriptures that are obscure only by taking the points of departure for understanding them from another place because they have their interpretive principle scattered among them.

As is the case for Irenaeus, scriptural interpretation is not purely local. The key in Genesis may best fit the door of Isaiah, which in turn opens up the meaning of Matthew. The mosaic must be put together with an eye toward the overall plan.
Irenaeus, Origen, and the great cloud of premodern biblical interpreters assumed that puzzling out the mosaic of Scripture must be a communal project. The Bible is vast, heterogeneous, full of confusing passages and obscure words, and difficult to understand. Only a fool would imagine that he or she could work out solutions alone. The way forward must rely upon a tradition of reading that Irenaeus reports has been passed on as the rule or canon of truth that functions as a confession of faith. “Anyone,” he says, “who keeps unchangeable in himself the rule of truth received through baptism will recognize the names and says and parables of the scriptures.” Modern scholars debate the content of the rule on which Irenaeus relies and commends, not the least because the terms and formulations Irenaeus himself uses shift and slide. Nonetheless, Irenaeus assumes that there is a body of apostolic doctrine sustained by a tradition of teaching in the church. This doctrine provides the clarifying principles that guide exegetical judgment toward a coherent overall reading of Scripture as a unified witness. Doctrine, then, is the schematic drawing that will allow the reader to organize the vast heterogeneity of words, images, and stories of the Bible into a readable, coherent whole. It is the rule that guides us toward the proper matching of keys to doors.

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