1 Corinthians 14:6-8

New Revised Standard Version, Anglicised

⁶ Now, brothers and sisters,^[a] if I come to you speaking in tongues, how will I benefit you unless I speak to you in some revelation or knowledge or prophecy or teaching? ⁷ It is the same way with lifeless instruments that produce sound, such as the flute or the harp. If they do not give distinct notes, how will anyone know what is being played? ⁸ And if the bugle gives an indistinct sound, who will get ready for battle?