1 Corinthians 14:9

An Understandable Version (2005 edition)

So, unless you people also speak clearly with your tongue, how will your speaking be understood? For it will be as though you were speaking into the air.

Cross References

1 Corinthians 14:10

There are, no doubt, many kinds of sounds [i.e., languages] in the world, and none of them is meaningless.

1 Corinthians 9:26

So, I run with a purpose and I fight that way [too]; I do not just shadow box.