17. For thou verily givest thanks well, but the other is not edified.
18. I thank my God, I speak in languages more than ye all:
19. Yet in the church I had rather speak five words with my understanding, that by my voice I may teach others also, than ten thousand words in an unknown language.
20. Brethren, be not children in understanding: yet in malice be ye children, but in understanding be men.
21. In the law it is written, With men of other tongues and other lips will I speak to this people; and yet for all that will they not hear me, saith the Lord.
22. Wherefore languages are for a sign, not to them that believe, but to them that believe not: but prophesying serveth not for them that believe not, but for them who believe.
23. If therefore the whole church is assembled in one place, and all speak in languages, and there come in those that are unlearned, or unbelievers, will they not say that ye are insane?
24. But if all prophesy, and there come in one that believeth not, or one unlearned, he is convinced by all, he is judged by all:
25. And thus are the secrets of his heart made manifest; and so falling down on his face, he will worship God, and report that God is in you in truth.
26. How is it then, brethren? when ye are assembled, every one of you hath a psalm, hath a doctrine, hath a language, hath a revelation, hath an interpretation. Let all things be done to edification.
27. If any man speaketh in an unknown language, let it be by two, or at the most by three, and that by course; and let one interpret.
28. But if there is no interpreter, let him keep silence in the church; and let him speak to himself, and to God.