Berean Standard Bible
1 Corinthians 14:11
“If, then, I do not know the meaning of someone’s language, I am a foreigner to the speaker, and he is a foreigner to me.”

In context
10Assuredly, there are many different languages in the world, yet none of them is without meaning.
11If, then, I do not know the meaning of someone’s language, I am a foreigner to the speaker, and he is a foreigner to me.
13Therefore, the one who speaks in a tongue should pray that he may interpret.
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Berean Standard Bible · A modern, readable English translation. Public domain (CC0).