1 Corinthians 14:22-23

English Standard Version

²² Thus tongues are a sign not for believers but for unbelievers, while prophecy is a sign^[a] not for unbelievers but for believers. ²³ If, therefore, the whole church comes together and all speak in tongues, and outsiders or unbelievers enter, ^(A)will they not say that you are out of your minds?