1 Corinthians 14:22-24

Revised Geneva Translation

²² Therefore, tongues are for a sign, not to those who believe, but to those who do not believe. And prophesying is not for unbelievers, but for believers.

²³ If therefore, when the whole Church comes together as one, and all speak tongues, and there come in those who are unlearned, or those who do not believe, will they not say that you are out of your wits?

²⁴ But if all prophesy, and there comes in one who does not believe, or one unlearned, he is rebuked by all and is examined by all.