20. Brothers, do not choose to have the minds of children. Instead, be free of malice like infants, but be mature in your minds.
21. It is written in the law: "I will speak to this people with other tongues and other lips, and even so, they will not heed me, says the Lord."
22. And so, tongues are a sign, not for believers, but for unbelievers; and prophecies are not for unbelievers, but for believers.