Isaiah spoke into a moment filled with fear and darkness. The northern tribes—Zebulun, Naphtali, and the region around the Sea of Galilee—were crushed by the Assyrians. Their land, once filled with promise, became what Isaiah calls a place of “gloom” and “anguish.” The world Isaiah lived in was a world where people knew darkness not just as a metaphor, but as a daily reality. And into that bleak landscape Isaiah dares to speak a word of astonishing hope.
He begins Isaiah 9 with a promise of reversal:
“But there will be no gloom for her who was in anguish” (Isa 9:1).
The very places that first felt the boots of invading armies will be the first places to see a new dawn. Grace goes first where the darkness was deepest.
Then Isaiah announces the heart of the Christmas message:
“The people who walked in darkness have seen a great light;
those who dwelt in a land of deep darkness, on them has light shone.” (Isa 9:2)
He’s describing something God does—not something people achieve. The light shines on them, not from them. It’s the language of rescue. And the Gospel writers notice this.
When Jesus begins His public ministry, Matthew tells us something remarkable. As Jesus leaves Nazareth and settles in Capernaum—on the very edge of the ancient lands of Zebulun and Naphtali—Matthew pauses his story and says:
“This was to fulfill what was spoken by the prophet Isaiah:
‘The people dwelling in darkness have seen a great light…’” (Matthew 4:14–16)
Matthew is deliberately pointing us back to Isaiah 9. Jesus stands in the dust of the very same towns Isaiah once named. It is as if the prophecy waited centuries for His feet to touch that soil. The Light dawns exactly where God said it would.
Isaiah continues the vision with images of joy and redemption—joy like harvest, joy like the relief of winning a battle you were sure you would lose. Then he describes the breaking of oppression: the yoke, the rod, the staff of the enemy. These are Exodus images—God freeing His people once again.
But then comes the surprise. The entire movement of this passage turns on one tiny hinge:
“For unto us a child is born, unto us a son is given” (Isa 9:6).
In Hebrew thinking, a “child born” makes them look forward to someone, a king perhaps, who will lead them to victory...
A “son given” - hmmm- must have sounded pretty strange 700 years before Jesus.....
Together they form the mystery the New Testament unwraps: fully human, fully divine.
Isaiah piles title upon title to show what this child will become:
-
Wonderful Counselor – wisdom beyond human kings
-
Mighty God – unmistakable deity
-
Everlasting Father – eternal protector and provider
-
Prince of Peace – the One who ends the long war of sin
And then Isaiah says something breathtaking:
“Of the increase of His government and of peace there will be no end… He will sit on the throne of David… from this time forth and forevermore.” (Isa 9:7)
This is the verse Gabriel echoes when he speaks to Mary. In Luke 1, the angel says:
“He will be great and will be called the Son of the Most High.
And the Lord God will give to Him the throne of His father David,
and He will reign over the house of Jacob forever,
and of His kingdom there will be no end.” (Luke 1:32–33)
Gabriel is essentially quoting Isaiah 9:7 to define who Mary’s child truly is.
The Child in the manger is the King Isaiah saw.
And when Jesus is born, Luke describes the shepherds hearing a cosmic announcement:
“Glory to God in the highest, and on earth peace among those with whom He is pleased.” (Luke 2:14)
Peace… not as a vague feeling or a political dream, but the very thing Isaiah promised the Prince of Peace would bring.
The Gospel of John also seems to have Isaiah 9 in mind when he writes his opening words:
“The light shines in the darkness, and the darkness has not overcome it.” (John 1:5)
John gives us the theological summary: the Child’s coming is the invasion of God’s light into a world that cannot stop Him.
So when we read Isaiah 9 at Christmas, we are reading the script the Gospels were built on. Isaiah gives us the shape of the story long before it arrives: a people in the dark, a world in turmoil, a hopeless landscape suddenly interrupted by a Child who is both God and man, both King and Savior.
At the end of the passage Isaiah says, almost as a whisper to calm our fears:
“The zeal of the Lord of hosts will do this.”
Not human power. Not good intentions. Not religious effort.
Christmas happens because God’s passion for His people makes it happen.
After we sit in Isaiah 9 for a while, the rest of Isaiah’s Christmas themes come alive with deeper meaning—Isaiah 7’s Immanuel sign, Isaiah 11’s shoot from the stump of Jesse, Isaiah 40’s comfort, Isaiah 53’s sorrow, Isaiah 60’s light, Isaiah 63’s judgment, and Isaiah 25’s feast. These are the windows that surround the great centerpiece of Isaiah 9.
But for this post and early Christmas meditations, our focus is simple:
Christmas in Isaiah is the dawning of God’s light in the world’s deepest darkness, fulfilled in the coming of Jesus Christ, the Child who is also the King whose kingdom will never end.
There is one phrase at the end of Isaiah 9 that I confess I often rush past, even though it may be the most important Christmas promise of all. After describing the Child, the King, the Light, the unending peace, Isaiah ends with this simple declaration:
“The zeal of the Lord of hosts will do this.” (Isaiah 9:7)
Not might do this.
Not help this happen.
Not cooperate with our efforts to bring it about.
No—the zeal of the Lord will do it.
That word zeal carries the picture of heat, passion, intensity—almost the image of someone flushed in the face because they care so deeply and act so decisively. It is God’s fierce determination to save, to redeem, to finish what He begins, to keep His promises no matter what stands in the way.
And I’ll be honest: that is a quality I often lack, especially this time of year.
The holidays expose how tired we can become. The cold months, the shorter days, the busy schedules, the emotional weight of memories—good and bad—they all drain the inner fire. I can move through December dutifully but not zealously. I can prepare lessons, attend events, go through traditions, yet quietly feel the pilot light burning low. If Isaiah had ended this great prophecy by saying, “And now you must keep up your zeal,” I would have no hope at all.
But he doesn’t.
He says God’s zeal is the engine of Christmas.
God’s zeal brings the Child.
God’s zeal brings the kingdom.
God’s zeal breaks the darkness.
God’s zeal sustains the weary.
God’s zeal accomplishes what our hearts cannot.
That gives me comfort, because zeal is often the missing ingredient in my own holiday season. I can be faithful; I can be reflective; I can be grateful—but the heat, the passion, the “red-faced energy” Isaiah describes feels beyond me.
And that’s the point.
Christmas is not asking me to manufacture zeal.
Christmas is declaring that the Lord’s zeal carries me when mine falters.
It’s His passion that lights the darkness.
It’s His determination that brings peace.
It’s His fierce love that keeps promises I forget.
So when I read Isaiah 9 this year, I find myself not only celebrating the Child who came, but resting in the God whose zeal made it certain. The God who burns with love for His people even when their hearts burn low. The God who finishes what He promises. The God who brings light into darkness—ours included.
“The zeal of the Lord of hosts will do this.”
And that is very good news for tired hearts at Christmas.
As we move into December... take time to reflect on these things.
Of course I have also offered an album of Christmas songs to lift you up as well-
Album: Christmas Sorrow, Joy, and Hope
__________
'Christmas in Isaiah' Devotionals
As we enter December, I wanted to share some devotionals that explores the theme of ‘Christmas in Isaiah’ These are very informal and typical of my blog…. full of flaws and awkward rambling at times.
Not all of these devotionals are ‘candy canes and cocoa’- there are some pretty challenging and hard things about Christmas. This world is a violent and cruel place. Sin has really sad consequences.
May we all stay ‘child-like’ as we contemplate the mystery of “The WORD became flesh and dwelt among us”.
If these end up blessing you- I'd love to hear from you- jayopsis@gmail.com
The Comfort of Christmas
https://www.jayopsis.com/2015/
The Only Government with Hope
https://www.jayopsis.com/2015/
The Terrible, Horrible, No Good, Very Bad Christmas
https://www.jayopsis.com/2015/
Christmas Green
https://www.jayopsis.com/2015/
Christmas Red
https://www.jayopsis.com/2015/
Why Christmas Includes Sorrow
https://www.jayopsis.com/2018/
A Christmas Feast Worth the Wait
https://www.jayopsis.com/2015/




