The book of Isaiah is one of the most powerful prophetic books in the Bible, filled with messages of judgment, hope and redemption. Isaiah lived during a time of moral and spiritual decline, yet he boldly proclaimed God's truth.

1. The call to repentance - a nation gone astray (1:18).

2. The vision of God's holiness - Isaiah's calling (6:3).

3. The promise of the Messiah - the hope of redemption (9:6).

4. The suffering servant - Jesus' sacrifice foretold (53:5).