1 Corinthians 14:19-21

Authorized (King James) Version

¹⁹ yet in the church I had rather speak five words with my understanding, that by my voice I might teach others also, than ten thousand words in an unknown tongue.

²⁰ Brethren, be not children in understanding: howbeit in malice be ye children, but in understanding be men. ²¹ In the law it is written, With men of other tongues and other lips will I speak unto this people; and yet for all that will they not hear me, saith the Lord.