1 Corinthians 14:23-25

23So if the whole church comes together and all speak in tongues, and unbelievers or uninformed people enter, will they not say that you have lost your minds?

24But if all prophesy, and an unbeliever or uninformed person enters, he will be convicted by all, he will be called to account by all.

25The secrets of his heart are disclosed, and in this way he will fall down with his face to the ground and worship God, declaring, “God is really among you.”