1 Corinthians 14:23-28

23If therefore the whole church be assembled together and all speak with tongues, and there come in men unlearned or unbelieving, will they not say that ye are mad? 24But if all prophesy, and there come in one unbelieving or unlearned, he is reproved by all, he is judged by all; 25the secrets of his heart are made manifest; and so he will fall down on his face and worship God, declaring that God is among you indeed.

26What is it then, brethren? When ye come together, each one hath a psalm, hath a teaching, hath a revelation, hath a tongue, hath an interpretation. Let all things be done unto edifying. 27If any man speaketh in a tongue, let it be by two, or at the most three, and that in turn; and let one interpret: 28but if there be no interpreter, let him keep silence in the church; and let him speak to himself, and to God.