"The mainline Christian church refused to accept glossolalia. They frowned on it for a few centuries and officially purged it at the Council of Constantinople in 381. The glossolalic cult remained on the fringes of the Christian world. The Church was willing to accept a little bit of xenoglossia if it helped convert heathens, as in the case of St. Louis Bertrand who converted thousands of Indians in the sixteenth century, spreading glossolalia across the continent faster than smallpox. But as soon as they were converted, those Indians were supposed to shut up and speak Latin like everyone else.