1 Corinthians 14:22

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.

1 Corinthians 14:24-25

24But if all prophesy, and an unbeliever or outsider enters, he is convicted by all, he is called to account by all, 25 bthe secrets of his heart are disclosed, and so, cfalling on his face, he will worship God and ddeclare that God is really among you.

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