Intro to Isaiah: Isaiah has been called "the Fifth Gospel" because of the directness and richness of his teaching about God's saving purposes in the world. The first 39 chapters lays out the holiness and sovereignty of God, the brokenness of creation, and its hopelessness apart from an intervention by God. The middle chapters—40-54—then reveal that God will rescue his creation through sheer grace and through the weakness of a chosen Servant and a renewed people. The final chapters—55-66—then reveal the nature of this new community that will exist between the death of the Servant (chapter 53) and the end of history (chapter 66.) That is where we live—between the first and second comings of Jesus Christ. How are we to live in that period? What are we to aspire to and work for during this time? What can be accomplished? Isaiah's vision is breath-taking, and it has to do with his vision of "a strong city"—the coming yet present city of God.