Glossolalia
A final phenomenon that is weakly similar to induced possession is glossolalia, or what the apostle Paul called “speaking in tongues.” ... Acts 2 describes what is probably its first instance in history as a great rushing wind roaring with cloven tongues of fire, in which all the apostles begin to speak as if drunk in languages they had never learned.
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Soon early Christians were doing it everywhere. Paul even put it on a level with prophecy (I Corinthians 14:27, 29). From time to time in the centuries since Paul, glossolalia as a search for authorization after the breakdown of the bicameral mind has had its periods of fashion.
... Glossolalia first happens always in groups and always in the context of religious services. I am stressing the group factor, since I think this strengthening of the collective cognitive imperative is necessary for a particularly deep type of trance. ... The worshiper, through repeated attendance at such meetings, watching others in glossolalia, first learns to enter into a deep-trance state of diminished or absent consciousness in which he is not responsive to exteroceptive stimuli. The trance in this case is almost an autonomic one: shakes, shivers, sweat, twitches, and tears. Then he or she may somehow learn to "let it happen." And it does, loud and clear, each phrase ending in a groan: aria ariari isa, vena amiria as aria!20 The rhythm pounds, the way epic dactyls probably did to the hearers of the aoidoi. And this quality of regular alternation of accented and unaccented syllables, so similar to that of the Homeric epics, as well as the rising and then downward intonation at the end of each phrase, does not — and this is astonishing — does not vary with the native language of the speaker. ... God has chosen to enter the lowly subject and has articulated his speech with the subject's own tongue. The individual has become a god — briefly. The cruel daylight of it all is less inspiring. While the phenomenon is not simply gibberish, nor can the average person duplicate the fluency and structure of what is spoken, it has no semantic meaning whatever. Tapes of glossolalia played before others in the same religious group are given utterly inconsistent interpretations.22 That the metered vocalizations are similar across the cultures and language of the speakers, probably indicates that rhythmical discharges from subcortical structures are coming into play, released by the trance state of lesser cortical control.23
The ability does not last. It attenuates. The more it is practiced, the more it becomes conscious, which destroys the trance. An essential ingredient of the phenomenon, at least in more educated groups where the cognitive imperative would be weaker, is the presence of a charismatic leader who first teaches the phenomenon. And if tongue speaking is to be continued at all, and the resulting euphoria makes it a devoutly wished state of mind, the relationship with the authoritative leader must be continued. It is really this ability to abandon the conscious direction of one's speech controls in the presence of an authority figure regarded as benevolent that is the essential thing. As we might expect, glossolalists by the Thematic Apperception Test reveal themselves as more submissive, suggestible, and dependent in the presence of authority figures than those who cannot exhibit the phenomenon.24 It is, then, this pattern of essential ingredients, the strong cognitive imperative of religious belief in a cohesive group, the induction procedures of prayer and ritual, the narrowing of consciousness into a trance state, and the archaic authorization in the divine spirit and in the charismatic leader, which denotes this phenomenon as another instance of the general bicameral paradigm and therefore a vestige of the bicameral mind.