For if the trumpet makes an uncertain sound, who will prepare for battle?
1 Corinthians 14:8
Surrounding context
14:7 Even things without life, whether flute or harp, when they make a sound, unless they make a distinction in the sounds, how will it be known what is piped or played?
14:8 For if the trumpet makes an uncertain sound, who will prepare for battle?
14:9 So likewise you, unless you utter by the tongue words easy to understand, how will it be known what is spoken? For you will be speaking into the air.