I was careful to quote the Scripture, so that wasn’t my answer; it was Paul, inspired by the Holy Spirit.
However, we know that there are at least two kinds of tongues: human and angelic. We see clearly that on the Day of Pentecost human tongues were spoken. It’s not a leap to infer that Paul is teaching the Corinthias how to use angelic tongues, since he clearly states that absent an interpreter, no one is edified in their minds.
1 Corinthians 13:1
[ The Excellence of Love ]
1 If I speak with the tongues of men and of angels, but do not have love, I have become a noisy gong or a clanging cymbal.
RE: It’s not a leap to infer that Paul is teaching the Corinthias how to use angelic tongues, since he clearly states that absent an interpreter, no one is edified in their minds.
OK, let’s accept this then. Since there are interpreters, then humans should be able to learn this angelic language.
Also, it can be inferred that those speaking it do not know what they are saying because if they did, they would be able to interpret what they said themselves ( I am multi-lingual by the way and I can interpret myself when I speak in Chinese, Filipino or English ).
It can also be inferred that those who can interpret KNOW the angelic language. And if so, it can be inferred that there is a GRAMMAR associated with it that we can learn like linguists do.
The question then becomes — absent an interpreter, how do we differentiate between someone who is simply babbling and someone who is speaking in a heavenly language which can be made intelligible to others?
Therein lies a HUGE problem.
People seek the gift, and not the love that is vastly superior to the gift.