Robin
I know this is an older entry, but I would like to comment anyway.
I agree with you on these things.
However I would like to comment on something you said.
For example, when is the last time you saw an unbeliever interpreted a message given in tongues at these churches?
The point about an unbeliever is correct; but there is another aspect I would like to touch upon.
When I was in a Pentecostal Church, lots of times there was an interpretation. However, they are very subjective and hard to know for the average person hearing if the interpretation was legitimate. I talked to one Christian lady years ago, who told me that when she was a teenager, loved to learn how to swear in as many languages as she could learn.
Years later, she was invited by a Pentecostal friend to one of her services.
During that service, someone started speaking in tongues, followed by an interpretation by someone else. People started applauding; but she was absolutely in shock. She told me that the interpretation had nothing to do with the tongues. In fact the tongues were a bunch of swear words.
Needless to say, she never returned.
Tom