1 Corinthians 4:19

4:19 But I will come to you soon, if the Lord is willing, and I will find out not only the talk of these arrogant people, but also their power.

1 Corinthians 14:9

14:9 It is the same for you. If you do not speak clearly with your tongue, how will anyone know what is being said? For you will be speaking into the air.