First Letter to the Corinthians

In the law it is written, "By men of strange languages and by the lips of strangers I will speak to this people. Not even thus will they hear me, says the Lord."

Therefore other languages are for a sign, not to those who believe, but to the unbelieving; but prophesying is for a sign, not to the unbelieving, but to those who believe.

If therefore the whole assembly is assembled together and all speak with other languages, and unlearned or unbelieving people come in, won't they say that you are crazy?

But if all prophesy, and someone unbelieving or unlearned comes in, he is reproved by all, and he is judged by all.

And thus the secrets of his heart are revealed. So he will fall down on his face and worship God, declaring that God is among you indeed.

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.

But if there is no interpreter, let him keep silent in the assembly, and let him speak to himself, and to God.

Let the prophets speak, two or three, and let the others discern.

But if a revelation is made to another sitting by, let the first keep silent.

For you all can prophesy one by one, that all may learn, and all may be exhorted.