## this letter ##

This refers to the letter that King Sennacherib of Assyria sent to Hezekiah.  (See: [2 Kings 19:8](./08.md))

## you are God alone ##

Hezekiah has changed from seeing Yahweh being Isaiah's God to Yahweh being the one and only God. The form of "you" in this location is emphatic. AT: "You yourself are God alone..."