That would make sense to me if they were speaking in an actual language they didn't study but needed to spread the gospel. That to me lines up biblically. I read a study by University of Penn that claimed that the frontal lobe (the vocal center of the brain) was not active when a person spoke in tongues. However I did some research and saw the MRI scan which were identical the first was the person praying in English and the next was them speaking in tongues. I did more research the authors of the study are devoted Christians who have both been on record as saying speaking in tongues is a great gift. We're they really going to disprove their own belief? So much for objective...
That is quite interesting if we are willing to step beyond the scriptures for our edification and so expose ourselves to greater chance to be misled.
2 Timothy 3:16 All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness:
17 That the man of God may be perfect, throughly furnished unto all good works.