Kehillah in Corinth I 14:9-11 Orthodox Jewish Bible (OJB)
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]