1 Corinthians 14:19-21

Revised Standard Version

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 Brethren, do not be children in your thinking; be babes in evil, but in thinking be mature. ²¹ In the law it is written, “By men 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.”