1 Corinthians 14:23-25

23If therefore the whole church is assembled in one place, and all speak with tongues, and there come in those that are unlearned, or unbelievers, will they not say that ye are mad? 24But if all prophesy, and there come in one that believeth not, or one unlearned, he is convicted by all, he is judged by all: 25And thus are the secrets of his heart made known; and so falling down on his face he will worship God, and report that God is in you in truth.