Isaiah's main theme isn't just judgment or hope—it's God himself. Dr. John walks through Isaiah chapters 1-5, showing how the prophet contrasts a sinful nation with the Holy One of Israel. These opening chapters set Isaiah's pattern: confronting present sin while pointing to future glory, from the Assyrian threat to the coming Messiah. Through the song of God's vineyard and a series of woes against injustice, Isaiah shows that there is no true good apart from God's glory.The Grand Vision: God's Story Through Isaiah: Isaiah is the second-most quoted book in the New Testament, yet many Christians have never