1 Corinthians 14:6-8

Darby Translation

⁶ And now, brethren, if I come to you speaking with tongues, what shall I profit you, unless I shall speak to you either in revelation, or in knowledge, or in prophecy, or in teaching?

⁷ Even lifeless things giving a sound, whether pipe or harp, if they give not distinction to the sounds, how shall it be known what is piped or harped?

⁸ For also, if the trumpet give an uncertain sound, who shall prepare himself for war?