Isaiah 28:11
For with stammering lips and a strange tongue will he speak to this people;
1 Corinthians 14:21
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.
Deuteronomy 28:49
Jehovah will bring a nation against thee from afar, from the end of the earth, like as the eagle flieth, a nation whose tongue thou understandest not;
Isaiah 33:19
Thou shalt no more see the fierce people, a people of a deeper speech than thou canst comprehend, of a stammering tongue that cannot be understood.
Jeremiah 5:15
Behold, I bring a nation upon you from afar, house of Israel, saith Jehovah: it is a mighty nation, it is an ancient nation, a nation whose language thou knowest not, neither understandest thou what they say.