17. For indeed you are giving thanks well, but the other person is not edified.
18. I give thanks to God that I speak with tongues more than all of you,
19. but in the church I prefer to speak five words with my mind, in order that I may instruct other people, than ten thousand words in a tongue.
20. Brothers, do not become children in your understanding, but with respect to wickedness be as a child, and in your understanding be mature.