'Tongue' in the Bible

So if you, in using a strange tongue, say words which have no sense, how will anyone take in what you are saying? for you will be talking to the air.

But in the church it would be better for me to make use of five words of which the sense was clear, so that others might have profit, than ten thousand words in a strange tongue.

What is it then, my brothers? when you come together everyone has a holy song, or a revelation, or a tongue, or is giving the sense of it. Let everything be done for the common good.

If any man makes use of a tongue, let it not be more than two, or at the most three, and in turn; and let someone give the sense: