1 Corinthians 14:23-28

23If therefore the whole assembly come together in one place, and all speak with tongues, and simple [persons] enter in, or unbelievers, will not they say ye are mad?

24But if all prophesy, and some unbeliever or simple [person] come in, he is convicted of all, he is judged of all;

25the secrets of his heart are manifested; and thus, falling upon [his] face, he will do homage to 1God, reporting that 2God is indeed amongst you.

26What is it then, brethren? whenever ye come together, each [of you] has a psalm, has a teaching, has a tongue, has a revelation, has an interpretation. Let all things be done to edification.

27If any one speak with a tongue, [let it be] two, or at the most three, and separately, and let one interpret;

28but if there be no interpreter, let him be silent in [the] assembly, and let him speak to himself and to 3God.