1 Corinthians 14:21-25

New Revised Standard Version, Anglicised

²¹ In the law it is written,

says the Lord. ²² Tongues, then, are a sign not for believers but for unbelievers, while prophecy is not for unbelievers but for believers. ²³ If, therefore, the whole church comes together and all speak in tongues, and outsiders or unbelievers enter, will they not say that you are out of your mind? ²⁴ But if all prophesy, an unbeliever or outsider who enters is reproved by all and called to account by all. ²⁵ After the secrets of the unbeliever’s heart are disclosed, that person will bow down before God and worship him, declaring, ‘God is really among you.’