The Apostle Paul
1 Corinthians 14:21ESV·traditional attribution

In the Law it is written, “By people 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.”

Matthew Henry Presbyterian @wholebiblehenry

In this passage the apostle pursues the argument, and reasons from other topics; as, I. Tongues, as the Corinthians used them, were rather a token of judgment from God than mercy to any people (Co1 14:21): In the law (that is, the Old Testament) it is written, With men of other tongues and other lips will I speak to this people; and yet for all...

Commenting on 1 Corinthians 14:21-25

John Gill Reformed Baptist @doctorgill

Wherefore tongues are for a sign,.... Of wrath and punishment inflicted on a rebellious and unbelieving people, and not of grace and kindness, as prophesying, or speaking to them by the prophets, was; and so this is an inference from what is said in the preceding verse, and shows, that there was no reason why believers should be so very desirous of them.

Albert Barnes Presbyterian @notesbybarnes

Verse 21. In the law it is written. This passage is found in . The word law here seems to mean the same as revelation; or is used to denote the Old Testament in general. A similar use occurs in . With men of other tongues, etc.