I understand one of the key evidences of this is said to be a gift of the spirit, speaking in tongues. Singing in the spirit is another variation.
Some interesting things have been said about this phenomenon.
http://en.wikipedia.org/wiki/GlossolaliaIn 1972, William J. Samarin, a linguist from the University of Toronto, published a thorough assessment of Pentecostal glossolalia that became a classic work on its linguistic characteristics.[6] His assessment was based on a large sample of glossolalia recorded in public and private Christian meetings in Italy, The Netherlands, Jamaica, Canada and the USA over the course of five years; his wide range included the Puerto Ricans of the Bronx, the Snake Handlers of the Appalachians and the Russian Molokan in Los Angeles.
Samarin found that glossolalic speech does resemble human language in some respects. The speaker uses accent, rhythm, intonation and pauses to break up the speech into distinct units. Each unit is itself made up of syllables, the syllables being formed from consonants and vowels taken from a language known to the speaker:
It is verbal behaviour that consists of using a certain number of consonants and vowels[...]in a limited number of syllables that in turn are organized into larger units that are taken apart and rearranged pseudogrammatically[...]with variations in pitch, volume, speed and intensity.[7]
[Glossolalia] consists of strings of syllables, made up of sounds taken from all those that the speaker knows, put together more or less haphazardly but emerging nevertheless as word-like and sentence-like units because of realistic, language-like rhythm and melody.[8]
That the sounds are taken from the set of sounds already known to the speaker is confirmed by others. Felicitas Goodman, a psychological anthropologist and linguist, also found that the speech of glossolalists reflected the patterns of speech of the speaker's native language.[9]
Samarin found that the resemblance to human language was merely on the surface and so concluded that glossolalia is "only a facade of language".[10] He reached this conclusion because the syllable string did not form words, the stream of speech was not internally organized, and – most importantly of all – there was no systematic relationship between units of speech and concepts. Humans use language to communicate but glossolalia does not. Therefore he concluded that glossolalia is not "a specimen of human language because it is neither internally organized nor systematically related to the world man perceives".[10] On the basis of his linguistic analysis, Samarin defined Pentecostal glossolalia as "meaningless but phonologically structured human utterance, believed by the speaker to be a real language but bearing no systematic resemblance to any natural language, living or dead".[11]
BBC History of ideas discussed the effects of a new fangled invention - writing, and touched on the subject of how technologies make societies and us as individuals. We will soon be wired. We are all very used to life enhancement devices like glasses and dentures, knives and forks, and cooking, why not other prosthetics to enable?
http://www.bbc.co.uk/programmes/b05077kgIs technology making us less human? Writer, Tom Chatfield is an enthusiastic downloader of the latest apps, an early adopter of anything small and shiny that promises to smooth his path through life. But Tom can't help feeling a little anxious about the hold that new technology has on his life.
Plato felt much the same, concerned that the new- fangled concept of writing might destroy the ability of the Ancient Greeks to memorise vast swathes of human knowledge. Do car sat-navs destroy our innate sense of direction? Do search engines displace our store of general knowledge?
With the help of the Economist's Digital Editor, Tom Standage and cybernetics expert, Kevin Warwick, Tom looks toward a future when the communication and computing power of our smartphones is inserted directly into our nervous systems. With superfast thought processes and a battery of new senses will we feel upgraded or out of control, superhuman or inhuman?
I wonder if Christianity made writing into a god - and the word was god - and used speaking in tongues as a means to refer back to the old spoken world but in a transformed, "holy" way?