This document provides historical context surrounding the prophet Isaiah. It discusses:
1) Major historical events during Isaiah's time, including the fall of Samaria in 721 BCE and rebellions against Assyria in 714 and 701 BCE.
2) Isaiah's call narrative in chapter 6, where he receives a vision of God on his throne and is commissioned as a prophet.
3) The outline of Isaiah's book and its divisions.
4) Details from chapter 7 where Isaiah promises King Ahaz a sign (the birth of Emmanuel) to assure Judah during an invasion from Israel and Aram.