1 Corinthians 14:6-8

Revised Geneva Translation

⁶ And now, brothers, if I come to you speaking in tongues, what shall I benefit you, unless I speak to you by either revelation, or by knowledge, or by prophesying, or by doctrine?

⁷ Just as things without life give a sound, whether a pipe or a harp, how shall it be known what is piped or harped unless a distinction is made between the sounds?

⁸ And also if the trumpet gives an uncertain sound, who shall prepare himself to battle?