However, if "unity" means something else, if it means something like a doctrine or a dogma that one must agree with for fear of being considered apostate or heretical, then it's quite a disturbing import of religious "thinking" into the political sphere. It's one thing for religious ideas (god, prayer, providence, etc.) to gain political traction, but when one of the forms of thinking typical of religion -- namely, that there is a core set of beliefs that one cannot diverge from without being considered evil -- bleeds into the political realm, then we have a much more serious problem. For if there is a revealed political truth, then there are political heretics, who must be treated as any heretic: ostracism, stoning, forced conversion, torture -- in short, the usual laundry list of atrocities committed by groups on individuals in the name of religion.
(I hope I don't have to explain why that would be a bad thing?)