1 Corinthians 14:6-8

Young's Literal Translation

⁶ And now, brethren, if I may come unto you speaking tongues, what shall I profit you, except I shall speak to you either in revelation, or in knowledge, or in prophesying, or in teaching?

⁷ yet the things without life giving sound -- whether pipe or harp -- if a difference in the sounds they may not give, how shall be known that which is piped or that which is harped?

⁸ for if also an uncertain sound a trumpet may give, who shall prepare himself for battle?