15. What is it then? I will pray with the spirit, but I will pray also with the understanding; I will sing with the spirit, but I will sing also with the understanding.
16. Since otherwise, if thou blessest with the spirit, how shall he who fills the place of the simple Christian say Amen, at thy giving of thanks, since he does not know what thou sayest?
17. For thou indeed givest thanks well, but the other is not edified.
18. I thank God I speak in a tongue more than all of you:
19. but in the assembly I desire to speak five words with my understanding, that I may instruct others also, rather than ten thousand words in a tongue.
20. Brethren, be not children in your minds, but in malice be babes; but in your minds be grown men.
21. It is written in the law, By people of other tongues, and by strange lips, will I speak to this people; and neither thus will they hear me, saith the Lord.
22. So that tongues are for a sign, not to those who believe, but to unbelievers; but prophecy, not to unbelievers, but to those who believe.
23. If therefore the whole assembly come together in one place, and all speak with tongues, and simple persons enter in, or unbelievers, will not they say ye are mad?
24. But if all prophesy, and some unbeliever or simple person come in, he is convicted of all, he is judged of all;
25. the secrets of his heart are manifested; and thus, falling upon his face, he will do homage to God, reporting that God is indeed amongst you.
26. What is it then, brethren? whenever ye come together, each of you has a psalm, has a teaching, has a tongue, has a revelation, has an interpretation. Let all things be done to edification.