Isaiah 37:6-7

6Isaiah said to them, ‘Tell your master that the Lord says this: “Do not let the words that you have heard make you afraid. The servants of the king of Assyria have insulted me, the Lord.

7Listen to me! I will put a spirit into the king of Assyria's mind. He will hear a report which will cause him to return to his own country. There, in his own land, I will cause someone to kill him with a sword.” ’