1 Corinthians 14:6-8

New Matthew Bible

⁶ Now brethren, if I come to you speaking with tongues, how do I profit you, unless I speak to you either by revelation, or by knowledge, or by instruction?

⁷ Moreover, when things without life give sound, whether it be a pipe or a harp, unless they make a distinction in the sounds, how can it be known what is piped or harped? ⁸ And also, if the trumpet gives an uncertain call, who will prepare himself to fight?