What language were the first spoken Pentecostal “tongues”?

What language is “tongues”? Troy Day [03/01/2016 11:16 AM]Agnes Ozman was believed to speak in Chinese http://www.pentecostaltheology.com/what-do-you-all-think-of-agnes-ozmans-automatic-writing/ Brian Roden [03/01/2016 11:47 AM]http://www.amazon.com/Global-Witnesses-Pentecost-Testimony-Tongues/dp/1935931326/ref=sr_1_1?ie=UTF8&qid=1456850789&sr=8-1&keywords=global+witnesses+to+pentecost

Being slain in the Spirit

Some earlier posts started me thinking about something I have never given too much thought to before… Is there biblical precedent for the manifestations…