1 Corinthians 14:6-14

6But now, brothers and sisters, if I come to you speaking in tongues, how will I benefit you—unless I speak to you by way of revelation or knowledge or prophecy or teaching?

7It is the same for lifeless things that make a sound—like a flute or a harp. If they make no distinction in the tones, how will what is played be recognized?

8For if the trumpet makes an unclear sound, who will prepare himself for battle?

9So also with you with your tongue—unless you utter speech that is intelligible, how will what is spoken be understood? For you will be talking to the wind!

10It may be that there are many kinds of languages in the world—and none without meaning.

11If then I do not understand the meaning of the language, I will be a foreigner to the speaker, and the speaker will be a foreigner to me.

12Likewise with you—since you are zealous for spiritual gifts, keep trying to excel for the building up of the community.

13Therefore let one who speaks in a tongue pray that he may interpret.

14For if I pray in a tongue, my spirit prays, but my mind is unfruitful.