6 Now, brothers,¹ if I come to you speaking in tongues, how will I benefit you unless I bring you some ^yrevelation or knowledge or prophecy or ^zteaching? 7 If even lifeless instruments, such as the flute or the harp, do not give distinct notes, how will anyone know what is played? 8 And ^aif the bugle gives an indistinct sound, who will get ready for battle? 9 So with yourselves, if with your tongue you utter speech that is not intelligible, how will anyone know what is said? For you will be ^bspeaking into the air. 10 There are doubtless many different languages in the world, and none is without meaning, 11 but if I do not know the meaning of the language, I will be ^ca foreigner to the speaker and the speaker a foreigner to me. 12 So with yourselves, since you are eager for manifestations of the Spirit, strive to excel in building up the church.