While I cannot imagine a religious practice or experimental practice without "interpretation," one might judge a group like ISIS in relation to core of traditional, canonical, broadly held interpretation and an evolving periphery or paradigm shift.
Both religion and science arise out of the official state interpretations of "natural signs," such as the inspection of entrails, or linguistic mediations, such as the Delphic oracle. Both have a long connection to politics and military decisions.
With sacred scripture, the problem assumes a different character. For Judaism, Christianity, and Islam, the "People of the Book," sacred texts mingle the interpretation of dreams, omens, and metaphors with explicit injunctions and legal codes. Having accumulated over some two millennia, such writings are full of contradictions and ambiguous rules, requiring a ceaseless hermeneutics that processes past into present.
The texts, in turn, produce the societies capable of preserving and reinterpreting them. A human-textual form of evolutionary selection in which canon accumulates around a kind of fitness. Though anyone can produce revolutionary interpretations of scripture or experimental findings, a nihilistic interpretation like that of ISIS or a theory that fails to produce new experiments may subvert historical selection.
Though it is difficult to retain a monopoly on interpretational latitude, as with the Delphic Oracle or Catholic Church, we should recall that these institutions had or have a far greater longevity than modern science. In science the "interpretation" of the "book of nature" is highly constrained and attempts to eliminate social "values." Yet the application, as a result, becomes independent and even less constrained. There was nothing essentially "unscientific" about Nazi eugenics...which is precisely its horror.
Unlike sacred texts, science itself places no special value on human beings and is open to many different classification systems and values. ISIS seems perfectly content to utilize science and technology towards its apocalyptic, "irrational" interpretations of sacred text. This is significant. We now have the weaponry produced by modern science without the assumption of "rational self-interest" and the constraint of "mutually assured destruction." A whole new level of Frankfurt School gloom.