'Language' in the Bible

For he who speaks in another language speaks not to men, but to God; for no one understands; but in the Spirit he speaks mysteries.

He who speaks in another language edifies himself, but he who prophesies edifies the assembly.

Therefore let him who speaks in another language pray that he may interpret.

For if I pray in another language, my spirit prays, but my understanding is unfruitful.

However in the assembly I would rather speak five words with my understanding, that I might instruct others also, than ten thousand words in another language.

What is it then, brothers? When you come together, each one of you has a psalm, has a teaching, has a revelation, has another language, has an interpretation. Let all things be done to build each other up.

If any man speaks in another language, let it be two, or at the most three, and in turn; and let one interpret.