1 Corinthians 14:21-25

21 aIn the Law it is written, bBy people of strange tongues and by the lips of foreigners will I speak to this people, and even then they will not listen to me, says the Lord.” 22Thus tongues are a sign not for believers but for unbelievers, while prophecy is a sign
Greek lacks  a sign
not for unbelievers but for believers.
23If, therefore, the whole church comes together and all speak in tongues, and outsiders or unbelievers enter, dwill they not say that you are out of your minds? 24But if all prophesy, and an unbeliever or outsider enters, he is convicted by all, he is called to account by all, 25 ethe secrets of his heart are disclosed, and so, ffalling on his face, he will worship God and gdeclare that God is really among you.

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