Isaiah 37:9-13

Sennacherib warned Hezekiah, through messengers and a letter (Isaiah 37:14), not to let messages from Yahweh deceive him into thinking that Jerusalem would survive. After all, all the lands that the Assyrian kings had invaded had fallen to them, he claimed. None of the powerful cities of the upper Euphrates received help to overcome Assyria from their gods. Likewise, the cities of Aram had not been able to resist takeover.