7. And even things without life giving sound, whether pipe or harp, except they give a distinction in the sounds, how shall it be known what is piped or harped?
8. For if the trumpet shall give an uncertain sound, who will prepare himself for battle?
9. So likewise ye, except ye utter by the tongue words easy to be understood, how shall it be known what is spoken? for ye will speak into the air.
10. There are, it may be, so many kinds of voices in the world, and none of them is without signification.
11. Therefore, if I know not the meaning of the voice, I shall be to him that speaketh a barbarian, and he that speaketh will be a barbarian to me.
12. Even so ye, forasmuch as ye are zealous of spiritual gifts, seek that ye may excel to the edifying of the church.
13. Wherefore, let him that speaketh in an unknown language, pray that he may interpret.