1 Corinthians 14:9

Lighthouse Bible 2006

So likewise you, unless you speak with the tongue words easy to understand, how shall it be known what is spoken? For you shall speak into the air.

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There are, it may be, so many kinds of sounds in the world, and none of them is without meaning.

I therefore so run, not as uncertainly; so I fight, not as one who beats the air: