1 Corinthians 14:9-11 ▼

9 In the same way, unless you use your tongue for intelligible speech, how will what is spoken be known? For you will be speaking into the air.

10 There are doubtless many different kinds of languages in the world, none is without meaning.

11 Therefore, if I do not know the meaning of the language, I will be a foreigner to the speaker, and the speaker will be a foreigner to me.