1 Corinthians 14:6-9

Worsley(i) 6 Now, my brethren, if I come to you speaking with many tongues, what shall I profit you, unless I speak intelligibly to you of revelation, or knowledge, or prophecy, or doctrine? 7 As inanimate things which give a found, whether pipe or harp, unless they give a distinction in the sounds, how shall what is piped or harped be understood? 8 For if the trumpet give an uncertain sound, who will prepare himself for the battle? 9 So also unless ye utter by the tongue intelligible words, how shall what is spoken be understood? for thus ye will be only talking to the wind.