Kehillah in Corinth I 14:9-11

Orthodox Jewish Bible

⁹ So also unless you by your lashon (tongue) render an intelligible dvar Torah, how will the thing being uttered be known? For you will be merely speaking into the air.

¹⁰ There are doubtless many kinds of foreign languages in the Olam Hazeh, and not one is meaningless.

¹¹ If, therefore, I do not have da’as of the meaning of the language, I will be to the speaker a foreigner and the speaker will be a foreigner to me. [BERESHIS 11:7]