1 Corinthians 14:21

It is written in the law [Isa. 28:11f], "I [i.e., God] will speak to these people [i.e., the Israelites] by men with foreign languages and through the lips of strangers, and even then they will not listen to me, says the Lord."

John 10:34

Jesus replied to them, "Is it not written in your law [Psa. 82:6], 'I said, you people are gods'?

Romans 3:19

Now we [all] know that everything the law says applies to those who are under [obligation to obey] that law, [Note: Here "the law" appears to refer to the Old Testament Scriptures generally, since Psalms and Isaiah are quoted. See verses 10-18]. This is so that the mouth of every objector may be stopped [i.e., from making excuses for his sin], and thereby bring the entire world under God's judgment [i.e., both Jews and Gentiles].

Treasury of Scripture Knowledge

Summary

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.

Bible References

The law

John 10:34
Jesus replied to them, "Is it not written in your law [Psa. 82:6], 'I said, you people are gods'?
Romans 3:19
Now we [all] know that everything the law says applies to those who are under [obligation to obey] that law, [Note: Here "the law" appears to refer to the Old Testament Scriptures generally, since Psalms and Isaiah are quoted. See verses 10-18]. This is so that the mouth of every objector may be stopped [i.e., from making excuses for his sin], and thereby bring the entire world under God's judgment [i.e., both Jews and Gentiles].