Kehillah in Corinth I 14:7-9

Orthodox Jewish Bible

⁷ So even lifeless things, like the flute or harp, if they do not articulate a distinction in the notes, how will it be known what is being played on the flute or on the harp?

⁸ Indeed, if a shofar gives an unclear trumpet call, who will prepare himself for krav (battle)? [BAMIDBAR 10:9; YIRMEYAH 4:19]

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.