Isaiah is one of the towering figures of the Old Testament. A prophet in Jerusalem during the 8th century BCE, he lived through one of the most turbulent periods in Israelite history, watching the northern kingdom fall to Assyria and warning the south that the same fate awaited them.

His message was straightforward: the people have abandoned justice, exploited the poor, and gone through the motions of religion while ignoring what God actually requires. The remedy isn’t more elaborate worship; it’s changed behavior.

Most scholars believe that Book of Isaiah, however, was written by at least two authors across different historical periods. The first 39 chapters address Isaiah’s own time. The final 27 chapters speak to a community in exile with some of the most transcendent poetry of consolation in all of scripture.

That shift from judgment to consolation is itself a theological statement: the same God who holds people accountable also refuses to abandon them.