…ISIS has an extreme and fundamentalist interpretation of Muslim doctrine. But in exactly the same way, dogma about the immorality of abortion, homosexuality, premarital sex, and divorce have become part of Catholicism. They are theological interpretations of scripture that appeal to some people’s sense of morality. Others disagree. Whose faith is “truer”?
In the end, there is no “true” religion in the factual sense, for there is no good evidence supporting their claims to truth. Nor are there “true” religions in the moral sense. Every faith justifies itself and its practices by appeal to authority, revelation, and dogma. There are just some religions we like better than others because of their practical consequences. If that’s what we mean by “true,” we should just admit it. There’s no shame in that, for it’s certainly the case that societies based on some religions are more dysfunctional than others. Morality itself is neither objectively true nor false, but at bottom rests on subjective preferences: the “oughts” that come from what we see as the consequences of behaving one way versus another.
By all means let us say that ISIS is a strain of Islam that is barbaric and dysfunctional, but let us not hear any nonsense that it’s a “false religion.” ISIS, like all religious movements, is based on faith; and faith, which is belief in the absence of convincing evidence, isn’t true or false, but simply irrational.