17. For you may be giving thanks well enough, but the other person is not being built up.
18. I thank God that I speak in tongues more than all of you.
19. Nevertheless, in church I would rather speak five words with my mind in order to instruct others, than ten thousand words in a tongue.
20. Brothers, do not be children in your thinking. Be infants in evil, but in your thinking be mature.
21. In the Law it is written, “By people of strange tongues and by the lips of foreigners will I speak to this people, and even then they will not listen to me, says the Lord.”
22. Thus tongues are a sign not for believers but for unbelievers, while prophecy is a sign not for unbelievers but for believers.
23. If, therefore, the whole church comes together and all speak in tongues, and outsiders or unbelievers enter, will they not say that you are out of your minds?
24. But if all prophesy, and an unbeliever or outsider enters, he is convicted by all, he is called to account by all,