5. I wish you all spoke in tongues, but even more that you would prophesy. The one who prophesies is greater than the one who speaks in tongues, unless he interprets so that the church may be strengthened.
6. Now, brothers and sisters, if I come to you speaking in tongues, how will I help you unless I speak to you with a revelation or with knowledge or prophecy or teaching?
7. It is similar for lifeless things that make a sound, like a flute or harp. Unless they make a distinction in the notes, how can what is played on the flute or harp be understood?
8. If, for example, the trumpet makes an unclear sound, who will get ready for battle?
9. It is the same for you. If you do not speak clearly with your tongue, how will anyone know what is being said? For you will be speaking into the air.
10. There are probably many kinds of languages in the world, and none is without meaning.
11. If then I do not know the meaning of a language, I will be a foreigner to the speaker and the speaker a foreigner to me.
12. It is the same with you. Since you are eager for manifestations of the Spirit, seek to abound in order to strengthen the church.
13. So then, one who speaks in a tongue should pray that he may interpret.
14. If I pray in a tongue, my spirit prays, but my mind is unproductive.