1 Corinthians 14:22-24

Haweis(i) 22 Wherefore tongues are for a sign, not to those that believe, but to those who do not believe: but the gift of prophecy is not for those who are infidels, but for believers. 23 If then the whole church assemble together in the same place, and all speak different tongues, and there come in illiterate persons, or infidels, will they not say ye are mad? 24 But if all prophesy, and any infidel or illiterate person come in, he receives conviction from all, he is judged of all: