1Cor.14.22

So where does it get you, all this speaking in tongues no one understands? It doesn't help believers, and it only gives unbelievers something to gawk at. Plain truth-speaking, on the other hand, goes straight to the heart of believers and doesn't get in the way of unbelievers.

1Cor.14.22

Tongues, then, are a sign, not for believers but for unbelievers; prophecy, however, is for believers, not for unbelievers.

1Cor.14.22

Therefore tongues are for a sign, not to those who believe but to unbelievers; but prophesying is not for unbelievers but for those who believe.

1Cor.14.22

So you see that speaking in tongues is a sign, not for believers, but for unbelievers; prophecy, however, is for the benefit of believers, not unbelievers.