Isaiah instructs us in how to wait with a vision of who and what we are waiting for.
Behind big promise of salvation from sin is an incomparably big promise keeper, who makes it possible through His servant.
God demonstrates His strength to do good on His promises through the trust of His king.
Isaiah convinces his hearers and us of the absolute sovereignty of God over the world and history.
Isaiah confronts sinful Jerusalem with God's holiness, and with vision of a day when they will sing in His midst.