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,
says the Lord.
All Commentaries on 1 Corinthians 14:21 Go To 1 Corinthians 14
The Apostolic Constitutions
AD 375
But such a one only who is vouchsafed this gift, for some cause which may be advantage to the salvation of the unbelievers, who are often put to shame, not with the demonstration of the world, but by the power of the signs; that is, such as are worthy of salvation: for all the ungodly are not affected by wonders; and hereof God Himself is a witness, as when He says in the law: "With other tongues will I speak to this people, and with other lips, and yet will they by no means believe."