Living interpretation of a fixed text

Why does a scripture whose words never change still need a living court to say what it requires?

A tradition says its text is complete, sufficient and unalterable. Then it maintains a standing body of people whose whole occupation is saying what the text requires — a rabbinic court, a magisterium, a school of jurists. If the words are perfect and permanent, what is left for anyone to do?

The reflex answer is that the officials are a power grab dressed as scholarship. Hold that thought: it may be right in particular cases and still miss why the office exists at all. Ask the cleaner question first — is there any text, however good, that could dispense with such a body?

Take a commandment that looks maximally clear: rest on the seventh day, do no work. Now put a real week in front of it. Is carrying a house key work? Is switching on a light? Is a doctor's visit to a patient? The text does not say, and no plausible expansion of it would, because the cases that need deciding are generated by a world that keeps producing new ones. Notice this is not a defect in the drafting. A general term applied to particulars leaves a margin no amount of care removes — H. L. A. Hart's "open texture" point about legal rules, which transfers exactly.

So there are always cases the text underdetermines. Who decides them? Here is the move worth watching. A living legislature would simply amend: add a clause, resolve the ambiguity, move on. A tradition that holds its text closed has forfeited that instrument. It cannot change the words. So the pressure that a legislature releases through amendment has nowhere to go except into interpretation — and the more strictly the text is fixed, the more interpretive machinery it needs. Fixity does not reduce the need for a court. It creates it.

Consider how frankly some traditions say this. The Talmudic story of the oven of Akhnai has Rabbi Eliezer supported by miracles and finally by a voice from heaven, and the sages overrule him anyway, quoting the text itself: "it is not in heaven" (tractate Bava Metzia, recalled). The claim is startling and deliberate — once given, the text is out of the author's hands and into the reader's court.

Now trace what the rulings themselves become. A court decides a case; the record is studied; later courts reason from it; eventually the accumulated rulings are compiled — Mishnah, then Talmud, then codes — and those compilations acquire an authority of their own, and in turn need interpreting. The interpretive layer thickens into a second body of text almost as binding as the first, though nobody legislated it. That is the emergent part: a system whose founding document is frozen still grows, only sideways.

Is a court actually needed for this, or would scholarship suffice? The reason for a court rather than a seminar is disagreement. Interpretations proliferate, and a community that must act together — eat together, marry, keep the same calendar — needs closure, not merely argument. Islamic jurisprudence marks this by distinguishing sharia, the divine law as such, from fiqh, the jurists' fallible understanding of it; a jurist exercising ijtihad may err, and the tradition says so, but the ruling still settles what this community does. Closure is the function; certainty is not claimed.

The strongest objection is not that courts are unnecessary but that they are usurpers, and it has a serious form. The Reformation doctrines of sola scriptura and the perspicuity of scripture hold that what is needful for salvation is plain in the text itself, so an interpreting institution is not filling a gap — it is inserting itself between reader and word, and the gap it claims to fill is one it manufactured to justify its office. That charge names a real hazard: the interpreter who can say what the text requires can, in practice, require nearly anything.

The best reply is empirical rather than theological. Traditions that removed the central interpreter did not converge on a single plain reading; they multiplied readings and grew their own authorities — confessions, catechisms, synods, commentaries, pastors whose readings congregations follow. Interpretation was distributed, not eliminated. Note what this does and does not show: it undercuts the claim that a fixed text is self-applying, without vindicating any particular claimant's authority. Which body should hold the office is exactly what the traditions disagree about, and nothing here settles it.

Two further honesty notes. First, the direction of causation runs both ways: interpreters do respond to changed circumstances, and they also change circumstances by ruling. Second, the common story that Sunni Islam "closed the gate of ijtihad" around the tenth century is disputed — Wael Hallaq argued the gate was never in fact closed and that the phrase describes a later polemic more than a historical event (recalled). I raise it because it matters here: whether interpretation can be shut down is precisely the question this concept turns on, and it is open.

• Whether the same logic explains why entrenched constitutions develop doctrines that dwarf their text.
• How a tradition decides which past ruling binds and which may be set aside, when the text says nothing about precedent either.

Every term the collection defines is gathered in the glossary.