Now, brothers, if I come to you and speak in tongues, what good will I be to you, unless I bring you some revelation1 or knowledge2 or prophecy or word of instruction?37
Even in the case of lifeless things that make sounds, such as the flute or harp, how will anyone know what tune is being played unless there is a distinction in the notes?
Again, if the trumpet does not sound a clear call, who will get ready for battle?49
So it is with you. Unless you speak intelligible words with your tongue, how will anyone know what you are saying? You will just be speaking into the air.