[UPDATE TO BELOW. He still claims that because he is speaking to God, then he is OK to do it at a church service in contradiction of Paul’s plain teaching].
He is Pentecostal and so speaks in tongues. But he starts out by saying how their meetings are criticised because they are all speaking in tongues together, at once, at the same time. To which criticism he responds that, well, they are speaking in an unknown language to God, praising Him, as if to say well, that’s OK then.
But it’s NOT OK, the criticism is valid, is “right on the money”, because it is precisely this situation that is quoted in the bible as being unacceptable and shouldn’t be done. If all speak in tongues and someone unfamiliar with the meetings comes in, they will say that you are mad, nuts, loco etc. Can he not read this for himself? And so, those wishing to speak in tongues should do so at home for their own edification, not speak it in church unless there is one who interprets present, and if there is none to interpret*, he should keep quiet.
This is all plainly to be read in 1 Corinthians 14:23. And Paul is NOT saying that he speaks in tongues more than you all, but that he thanks God more than any of you that he speaks in tongues….”. ‘Nevertheless, in church I would rather speak five words with my mind than ten thousand words in a tongue…’ AND, “Do all speak in tongues?” Obvious answer NO. And the Pentecostal experience was one of KNOWN LANGUAGES of the time. And Paul said he would rather that you prophesied than speak in tongues. Just saying.
*[So “none to interpret” would also mostly disqualify the person themselves from interpreting]