NET
21 It is written in the law: “By people with strange tongues and by the lips of strangers I will speak to this people, yet not even in this way will they listen to me,” says the Lord.
Darby
21 It is written in the law, By people of other tongues, and by strange lips, will I speak to this people; and neither thus will they hear me, saith the Lord.
KJV
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.