With the first part of your reply, I agree 100%. On the day of Pentacost the people heard their language from the Apostles whatever their language was. To the second part I agree partially. (to agree 100% would get me in so much trouble with my Pentacostal wife
.) I have looked into the speaking in tongues phenomenon culturally and it is nothing new. I seen a Tibetan Shaman speak in tongues. A voodoo priestess speak in tongues and a Spiritist channeling a spirit speak in tongues....and truthfully it didn't sound much different than what I have observed in Charismatic Pentacostal churches. I guess my question to the Pentacostals would be how they know the differences.
I'm going to try to expand this discussion a little to some other points of view on it not commonly brought up. First, I've heard the point of view that speaking in tongues as recorded in the book of Acts is the standard of all of what speaking in tongues is. I disagree with that on a number of levels. Paul speaks of it in the book of 1 Corinthians which was written much earlier than Luke/Acts.
When Luke describes the day of Pentecost he casts the phenomenon of speaking in tongues into the miracle camp, a miraculous acquisition of another actual language spoken through you like someone channeling which then any native speaker will instantly recognize. The tongues in Luke is not for the purpose of preaching, as everyone in that day could understand Greek as well as their native tongues, but as a miracle sign so the people would interpret as a sign from God, like changing water to wine, or raising the dead. When you contrast this miracle setting in the story told by Luke with that of Paul's mention of it, it has a different flavor. It's not a miracle sign, but an actual common practice that Paul describes as "self-edification".
What Paul's description of tongues in the church at Corinth parallels what you see in all other religious and spiritual practices which predate Christianity by at least 400 years as it is mentioned by Plato. His description of it is not the "miracle sign" of Luke, but one of personal edification. It is a private affair to him, not to convince others a miracle is happening. He clearly states, "For one who speaks in a tongue does not speak to men but to God; for no one understands, but in his spirit he speaks mysteries." This is not a known language, the miracle story of Luke. He does not speak to men as no one understands (or can), but to God, in his spirit. This is what the phenomenon of glossolalia is in all religions with those who practice it. I can explain more on this later as to what it does, its effects, and so forth.
What Paul emphasizes by contrast however, is that in the church body, in the congregation of assembled members, it is better to edify one another than to simply engage in personal spiritual practices, potentially crossing the line in "showcasing" your gifts to impress others with them displaying how spiritual you are (an ego exercise). He stresses the gift of "prophecy" over tongues, because in speaking utterances another can understand, they are built up with the mind. There is mention of the gift of "interpretation", but in all honesty I think that is really more a type of "prophetic utterance" that someone may feel inspired to share in the context of religious ecstasies, of which tongues is associated with. I do not believe it is an "actual" interpretation, but itself a form of ecstasy, a type of channeling.
Prophecy, by the way, which Paul is speaking of I do not believe is anything along the lines of predicting the future, or a "Thus saith the Lord!," sort of utterance. Rather, it is inspired speach, like a poet, or a musician who sings from the heart with the clarity of divine insight. Others receive inspiration for this, and are edified or built up. This is what Paul is wanting to see in the congregation, rather than just one big spirit-fest.
I'll share some more thoughts later as I think there is a great deal of confusion about it, as well as these ideas of "counterfeit tongues" and whatnot. This is a common religious phenomenon, and it did, and does exist in Christianity too, because people do in fact have religious experiences. I've know people who have never been exposed to it had it happen spontaneously in deep prayer and meditation. It's not magic, but it is common in religious experience. Not everyone experiences it, but may do.