Why is Isaiah so important?
The book of Isaiah provides us with the most comprehensive prophetic picture of Jesus Christ in the entire Old Testament. It includes the full scope of His life: the announcement of His coming (Isaiah 40:3–5), His virgin birth (7:14), His proclamation of the good news (61:1), His sacrificial death (52:13–53:12), and His return to claim His own (60:2–3). Because of these and numerous other christological texts in Isaiah, the book stands as a testament of hope in the Lord, the One who saves His people from themselves.
What's the big idea?
Isaiah’s overall theme receives its clearest statement in chapter 12: “Behold, God is my salvation, / I will trust and not be afraid” (Isaiah 12:2). This echoes the meaning of Isaiah’s name, which means the “salvation of Yahweh.”2 Having read the book, one might wonder about the strong presence of judgment that runs through the first thirty-nine chapters when the theme is salvation. How can the two coexist? The presence of judgment indicates its necessity for salvation to occur. Before we can have salvation, we must have a need for it!
So the bulk of those early chapters in Isaiah detail judgments against the people who have turned their backs on the Lord, showing us that those who persist in their rebellion will receive judgment. On the other hand, we also see God’s faithfulness to His promise. He will preserve a small remnant of faithful believers, those who will continue on into the glorious renewed world He has prepared for His children in the end times (65:17–66:24).
How do I apply this?
Because of its scope, Isaiah contains one of the clearest expressions of the gospel in all the Old Testament. Even from the first chapter, it is clear that the people have turned away from God and failed in their responsibilities as His children (Isaiah 1:2–17). Yet God miraculously holds out hope to this unrepentant people, offering cleansing of sins and the blessing that comes with faith and obedience in Him (1:18–20). Salvation lies only in God—the only question is whether or not we will accept His offer.
In addition to its gospel message, the book of Isaiah clearly articulates the sins of God’s people—dealing with others unjustly which resulted in their offering hypocritical sacrifices to God. Do you see anything in your own life that might fall under Isaiah’s critique of injustice—treating family, colleagues, or even strangers with unkindness or even disdain? Isaiah’s message is also a call for believers to come back to purity in our love for God and for our neighbors (Luke 10:26–28).
Copyright ©️ 2009 by Charles R. Swindoll, Inc. All rights reserved worldwide.