1 Corinthians 14:8-10

Evangelical Heritage Version

⁸ If the trumpet makes an uncertain sound, who will get ready for battle? ⁹ So also with you: Unless you use your tongue to produce intelligible speech, how will anyone know what is being spoken? To be sure, you will be speaking only into the air.

¹⁰ There are perhaps ever so many kinds of languages in the world, and not one of them is without meaning.