1 Corinthians 14:7
Yet even lifeless things, whether flute or harp, when producing a sound, if they do not produce distinct [musical] tones, how will anyone [listening] know what is piped or played?
Numbers 10:2-10
“Make two trumpets of silver; you shall make them of hammered work. You shall use them to summon the congregation and to have the camps move out.
Matthew 11:17
Luke 7:32
1 Corinthians 13:1
If I speak with the tongues of men and of angels, but have not
1 Corinthians 14:8
And if the [war] bugle produces an indistinct sound, who will prepare himself for battle?