1 Corinthians 14:9-11 Worldwide English (New Testament) (WE)
9 If you say words that people cannot understand, they will not know what you say. You talk for nothing!
10 There are no doubt many different languages in the world. And every one of them has a meaning.
11 But if a person talks in a language and I do not know the meaning of it, I will be like a stranger to him and he will be like a stranger to me.