TSK · Isaiah 33:19

The LORD will raise up a distant nation against you, one from the other side of the earth as the eagle flies, a nation whose language you will not understand,

For with mocking lips and a foreign tongue he will speak to these people.

So King Sennacherib of Assyria broke camp and went on his way. He went home and stayed in Nineveh.

For you are not being sent to a people of unintelligible speech and difficult language, but to the house of Israel–

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.