Isaiah 37:8-9

Meanwhile, the Assyrian commander returned to the king, for he had heard that the king had left Lachish to lay siege against the city of Libnah. Now, King Sennacherib had heard a report that the king of Ethiopia, Tirhakah, had allied with Hezekiah and was coming to fight against him. So when he heard it he sent messengers to Hezekiah with this message