4. He that speaks in an unknown tongue edifies himself; but he that prophesies edifies the church.
5. I would that you all spoke with tongues, but rather that you prophesied: for greater is he that prophesies than he that speaks with tongues, except he interpret, that the church may receive edifying.
6. Now, brethren, if I come unto you speaking with tongues, what shall I profit you, except I shall speak to you either by revelation, or by knowledge, or by prophesying, or by doctrine?
7. And even things without life which give sound, whether flute or harp, except they give a distinction in the sounds, how shall it be known what is played?
8. For if the trumpet gives an uncertain sound, who shall prepare himself for the battle?
9. So likewise you, except you utter by the tongue words easy to be understood, how shall it be known what is spoken? for you shall speak into the air.
10. There are, it may be, so many kinds of voices in the world, and none of them is without meaning.