18. I thank God that I speak in tongues more than all of you,
19. but in the church I want to speak five words with my mind to instruct others, rather than ten thousand words in a tongue.
20. Brothers and sisters, do not be children in your thinking. Instead, be infants in evil, but in your thinking be mature.
21. It is written in the law: “By people with strange tongues and by the lips of strangers I will speak to this people, yet not even in this way will they listen to me,” says the Lord.
22. So then, tongues are a sign not for believers but for unbelievers. Prophecy, however, is not for unbelievers but for believers.