Isaiah 37:6-7 ESV

6 Isaiah said to them, "Say to your master, 'Thus says the LORD: Do not be afraid because of the words that you have heard, with which the young men of the king of Assyria have reviled me.
7 Behold, 1I will put a spirit in him, so that 2he shall hear a rumor and return to his own land, and 3I will make him fall by the sword in his own land.'"

References for Isaiah 37:7