Isaiah 28:11
For with the stammerings of the lip and with another tongue he will speak to this people.
1 Corinthians 14:21
It has been written in the law, That in other tongues and in other lips will I speak to this people; and not so will they hear me, says the Lord.
Deuteronomy 28:49
Jehovah shall raise up against thee a nation from far off, from the extremity of the earth, as the eagle shall fly, whose tongue thou shalt not hear;
Isaiah 33:19
Thou shalt not see a firm people, a people of a deep lip above,hearing; of a stammering tongue, of no understanding.
Jeremiah 5:15
Behold me bringing upon you a nation from far off, O house of Israel, says Jehovah: it is a nation of strength, it is a nation of old, a nation thou wilt not know its tongue, and thou shalt not hear what it will speak.