1 Corinthians 14:17-19 Amplified Bible (AMP)

17. To be sure, you may give thanks well (nobly), but the bystander is not edified [it does him no good].

18. I thank God that I speak in [strange] tongues (languages) more than any of you or all of you put together;

19. Nevertheless, in public worship, I would rather say five words with my understanding and intelligently in order to instruct others, than ten thousand words in a [strange] tongue (language).

1 Corinthians 14