'Voice' in the Bible

You are conscious that when you were Gentiles, in whatever way you were guided, you went after images without voice or power.

Even things without life, giving a voice, whether pipe or harp, if they give not a distinction in the sounds, how shall it be known what is piped or harped?

For if the trumpet give an uncertain voice, who shall prepare himself for war?

And so with you; if with the living voice you fail to utter intelligible words, how will people know what you are saying? You will be talking to the winds.

There are, it may be, a number of different voices in the world, and no voice is without sense.

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.

Yet in the church I had rather speak five words with my understanding, that by my voice I might teach others also, than ten thousand words in an unknown tongue.