1 Corinthians 14:7-8; 1 Corinthians 14:10-11

1 Corinthians 14:7-8

7 And even things without life giving sound, whether pipe or harp, except they give a distinction in the sounds, how shall it be known what is piped or harped?

8 For if the trumpet give an uncertain sound, who shall prepare himself to the battle?

1 Corinthians 14:10-11

10 There are, it may be, so many kinds of voices in the world, and none of them is without signification.

11 Therefore if I know not the meaning of the voice, I shall be unto him that speaketh a barbarian, and he that speaketh shall be a barbarian unto me.