A Devotional Commentary on Isaiah 40: Comfort, Hope, and Renewed Strength
Isaiah 40 · King James Version
Quick Answer: This commentary on Isaiah 40 highlights God’s invitation to comfort His people and to trust His sovereign power. The prophet announces a highway for the Lord, reveals that all flesh is fragile, and contrasts human weakness with God’s everlasting might. For believers, the chapter reshapes anxiety into worship and replaces depletion with renewed strength while waiting on the Lord.
Isaiah 40 (King James Version)
“Comfort ye, comfort ye my people, saith your God.
Speak ye comfortably to Jerusalem, and cry unto her, that her warfare is accomplished, that her iniquity is pardoned: for she hath received of the LORD’S hand double for all her sins.
The voice of him that crieth in the wilderness, Prepare ye the way of the LORD, make straight in the desert a highway for our God.
Every valley shall be exalted, and every mountain and hill shall be made low: and the crooked shall be made straight, and the rough places plain:
And the glory of the LORD shall be revealed, and all flesh shall see
it together: for the mouth of the LORD hath spoken
it.
The voice said, Cry. And he said, What shall I cry? All flesh
is
grass, and all the goodliness thereof
is as the flower of the field:
The grass withereth, the flower fadeth: because the spirit of the LORD bloweth upon it: surely the people
is grass.
The grass withereth, the flower fadeth: but the word of our God shall stand for ever.
O Zion, that bringest good tidings, get thee up into the high mountain; O Jerusalem, that bringest good tidings, lift up thy voice with strength; lift
it up, be not afraid; say unto the cities of Judah, Behold your God!
Behold, the Lord GOD will come with strong
hand, and his arm shall rule for him: behold, his reward
is with him, and his work before him.
He shall feed his flock like a shepherd: he shall gather the lambs with his arm, and carry
them in his bosom,
and shall gently lead those that are with young.
Who hath measured the waters in the hollow of his hand, and meted out heaven with the span, and comprehended the dust of the earth in a measure, and weighed the mountains in scales, and the hills in a balance?
Who hath directed the Spirit of the LORD, or
being his counsellor hath taught him?
With whom took he counsel, and
who instructed him, and taught him in the path of judgment, and taught him knowledge, and shewed to him the way of understanding?
Behold, the nations
are as a drop of a bucket, and are counted as the small dust of the balance: behold, he taketh up the isles as a very little thing.
And Lebanon
is not sufficient to burn, nor the beasts thereof sufficient for a burnt offering.
All nations before him
are as nothing; and they are counted to him less than nothing, and vanity.
To whom then will ye liken God? or what likeness will ye compare unto him?
The workman melteth a graven image, and the goldsmith spreadeth it over with gold, and casteth silver chains.
He that
is so impoverished that he hath no oblation chooseth a tree
that will not rot; he seeketh unto him a cunning workman to prepare a graven image,
that shall not be moved.
Have ye not known? have ye not heard? hath it not been told you from the beginning? have ye not understood from the foundations of the earth?
It is he that sitteth upon the circle of the earth, and the inhabitants thereof
are as grasshoppers; that stretcheth out the heavens as a curtain, and spreadeth them out as a tent to dwell in:
That bringeth the princes to nothing; he maketh the judges of the earth as vanity.
Yea, they shall not be planted; yea, they shall not be sown: yea, their stock shall not take root in the earth: and he shall also blow upon them, and they shall wither, and the whirlwind shall take them away as stubble.
To whom then will ye liken me, or shall I be equal? saith the Holy One.
Lift up your eyes on high, and behold who hath created these
things,
that bringeth out their host by number: he calleth them all by names by the greatness of his might, for that
he is strong in power; not one faileth.
Why sayest thou, O Jacob, and speakest, O Israel, My way is hid from the LORD, and my judgment is passed over from my God?
Hast thou not known? hast thou not heard,
that the everlasting God, the LORD, the Creator of the ends of the earth, fainteth not, neither is weary?
there is no searching of his understanding.
He giveth power to the faint; and to
them that have no might he increaseth strength.
Even the youths shall faint and be weary, and the young men shall utterly fall:
But they that wait upon the LORD shall renew
their strength; they shall mount up with wings as eagles; they shall run, and not be weary;
and they shall walk, and not faint.”
Historical background behind the comfort of Isaiah 40
Isaiah 40 belongs to the “Book of Comfort” within Isaiah (often associated with the later period when Judah faced exile and despair). Many readers in that setting felt life had been stripped away: Jerusalem lay in ruin, worship seemed threatened, and hope felt delayed. Into that darkness, God speaks words of consolation—comforting His covenant people not because their pain was small, but because God’s character is unchanging.
The chapter also uses proclamation imagery: a voice calls in the wilderness, preparing a way for the Lord. In the ancient Near East, royal processions and military campaigns could involve road-building to make travel and kingship reach distant places. Isaiah adapts that worldview spiritually: the Creator will come to restore and reign. The prophet’s message reassures the community that God’s plans are larger than political powers, and that even nations appear insignificant compared to the Holy One. That contrast would have strengthened hearers who had been tempted to measure hope by visible circumstances.
Original-language nuance: “Comfort” and “wait” in Isaiah 40
Isaiah’s central pastoral call uses Hebrew terms that convey more than casual encouragement. The language of “comfort” carries the sense of soothing, strengthening, and restoring the heart after distress—close to the idea of coming alongside someone in their grief. Later, the chapter emphasizes those who “wait” on the LORD. In Hebrew usage, waiting is not passive resignation; it implies confident expectation, perseverance, and reliance on God’s timing. The tone throughout is both tender and commanding: God comforts His people, then calls them to trust actively.
Because this passage is written in Hebrew poetry and proclamation style, key words function with emotional weight. God’s comfort is meant to be received, believed, and lived from—especially when the surrounding world looks unstable and temporary.
Comfort ye: God’s initiating compassion (devotional commentary on Isaiah 40)
Isaiah 40 opens with a direct divine summons: “Comfort ye, comfort ye my people.” The repetition is intentional. In Hebrew preaching and poetry, repetition often intensifies meaning—here, it signals that God’s comfort is not a one-time thought but a persistent message meant to reach weary hearts repeatedly. God does not merely inform His people that things will improve; He speaks as their God and therefore claims the right to restore their confidence.
The comfort is also covenant-shaped. The text addresses Jerusalem, describing “warfare” as accomplished and “iniquity” as pardoned. In other words, suffering is not denied, but its spiritual cause is acknowledged and then answered by forgiveness. The phrase about receiving “double for all her sins” can be understood as the completion of judgment—an image that justice has run its course and grace now begins. This matters devotionally: hope is not blind optimism; it is grounded in God’s moral actions.
Then the chapter moves into proclamation. A voice cries in the wilderness: “Prepare ye the way of the LORD.” The wilderness setting highlights emptiness and difficulty—yet the call is to prepare, to straighten, to make a “highway.” God’s comfort includes practical orientation. The people are being taught how to live with hope in the present, not only how to imagine a better future.
Isaiah therefore frames comfort as a transformation of perception and posture. God’s people are called to listen, respond, and participate in the coming act of the LORD—comfort leads to obedience.
A highway for our God: leveling the obstacles (exposition of Isaiah 40)
Isaiah 40’s road imagery continues the theme of preparation. The prophet declares that valleys will be exalted, mountains and hills made low, crooked places made straight, and rough ground made plain. These are not random metaphors; they describe what must change for the LORD’s approach to be welcomed.
Spiritually, “valleys” can represent humiliation, fear, or low spiritual ground. “Mountains and hills” can represent obstacles that intimidate or systems that appear immovable. When God levels what feels permanent and raises what feels defeated, the message becomes unmistakable: God’s reign does not depend on favorable terrain. If the road is the people’s path, then God is also reshaping their journey—removing distorted angles, correcting crookedness, and smoothing the places that cause stumbling.
The “crooked” and “rough” language also targets moral and relational realities. Isaiah’s earlier themes in the book often connect sin with distortion of worship and life. Here, straightness and plainness suggest renewed integrity—hearts and practices brought into alignment with God’s purposes.
Importantly, the text does not stop at preparation; it points to revelation. “The glory of the LORD shall be revealed, and all flesh shall see it together.” The coming of God is public, not hidden. That universal scope counters private despair: the believer’s hope is not a solitary coping mechanism.
The verse flow also includes a rhythm of proclamation and response: the voice says, “Cry,” and the answer turns to the frailty of human life—“All flesh is grass.” The message then steadies the listener: human glory fades, but God’s word stands forever. In effect, Isaiah is teaching that the path to comfort is trust in divine permanence rather than dependence on human stability.
Human frailty vs. God’s everlasting word: strength for the weary
After the vision of God’s glory, Isaiah confronts a temptation: to build confidence on what can be measured, displayed, or admired. The prophet responds with a stark reminder: “All flesh is grass… the flower fadeth.” Human vitality is real but temporary, and what seems strong can wither quickly—because the “spirit of the LORD” blows upon it.
This does not teach nihilism. Instead, it redirects trust. If people and achievements are like grass and flowers, then ultimate security cannot be found in them. The comfort of Isaiah 40 becomes more than emotional reassurance; it is theological clarity. The contrast is explicit: “but the word of our God shall stand for ever.” God’s speech is lasting and reliable.
That permanence anchors the next section’s call to Zion: “Behold your God!” The invitation is urgent—“get thee up,” “lift up thy voice,” “be not afraid.” Worship becomes the appropriate response to stable truth. Fear is not treated as a rational necessity but as an obstacle to faith; God’s presence is offered as the antidote.
Isaiah then presents God as the powerful shepherd, the ruler whose arm governs for Him, and the Creator whose authority stretches beyond human comprehension. The chapter asks a series of rhetorical questions about measurement—waters, heavens, dust, mountains, and hills. These questions emphasize that God’s power is not only strong; it is comprehensive. No one has to “manage” God’s ability. No one can reduce God to a human-scale plan.
Finally, the chapter culminates with the promise: those who wait on the LORD “shall renew their strength.” The imagery of mounting up with wings as eagles, running without wearying, and walking without fainting directly addresses spiritual fatigue. Isaiah’s message therefore travels from comfort to reorientation, from reorientation to worship, and from worship to endurance.
God’s incomparable holiness: idols, nations, and the Creator who does not faint
Isaiah 40 refuses to let the listener treat God as one option among many. It explicitly challenges comparison: “To whom then will ye liken God? or what likeness will ye compare unto him?” This rhetorical confrontation addresses idolatry not merely as a religious mistake but as a spiritual misdiagnosis—people try to shrink God to fit their imaginations.
The chapter explains how idols are made: the workman melts a graven image; the goldsmith overlays it; someone too poor chooses a tree that will not rot and seeks a skilled craftsman. The point is not to mock craftsmanship but to reveal the emptiness of substitutes. An idol can be shaped, but it cannot sustain or save. It does not have the Creator’s breath, word, or righteousness.
Isaiah then expands the argument beyond Israel’s idols to the nations themselves: “the nations are as a drop of a bucket” and “less than nothing, and vanity.” Human governance, wisdom, and status are portrayed as small next to divine authority. This is not meant to encourage contempt; it is meant to destroy misplaced fear. If God is sovereign and incomparable, then intimidation by political forces loses its power over the heart.
The chapter also confronts a complaint from God’s people: “My way is hid from the LORD, and my judgment is passed over from my God.” In response, Isaiah declares that the LORD, the everlasting God, “fainteth not, neither is weary.” God’s knowledge is not limited; His understanding is beyond searching.
This portion connects directly to the earlier comfort. God’s people were tempted to interpret delay as abandonment. Isaiah corrects that interpretation. God’s “waiting” is not neglect, and God’s purposes are not lost. That is why the final promise is so fitting: God gives power to the faint and increases strength for those with none. Even youths and young men fall—but those who wait upon the LORD renew their strength.
Isaiah 40 therefore builds a devotional logic: stop comparing, stop shrinking God, stop assuming silence equals failure, and return to the LORD’s steady action.
How to Apply This Today: waiting with active hope
Isaiah 40 meets real modern weariness—anxiety about unanswered prayers, grief that feels unfinished, and fatigue from long seasons of “wilderness.” A first step is to reframe comfort as God’s word to you, not merely a feeling you try to manufacture. When you feel fear rising, practice receiving God’s invitation: “Be not afraid” becomes a deliberate spiritual decision.
Next, use the chapter’s “highway” imagery. Ask where your path is crooked or rough—resentment, unforgiveness, moral compromise, or distorted thinking. Choose one concrete act of straightening: repent, reconcile, simplify priorities, or submit an area of life you have tried to control. Comfort in Isaiah is not permission to stay stuck; it is empowerment to move forward in faith.
Then, guard against measuring God by visible outcomes. The chapter reminds us that human strength fades like grass, but God’s word stands forever. When you want immediate results, remember that waiting on the LORD is confident expectation and perseverance. Build a small rhythm: daily Scripture, prayer that names your weakness honestly, and gratitude for what God has already done.
Finally, lean into the promise of renewed strength. If you are depleted, ask God for grace to take the next step—one “run” or “walk” at a time—rather than demanding endurance on your own.
Related Bible Passages
Psalm 46:1-3
These verses echo God as refuge and help, aligning with Isaiah 40’s comfort that steadies hearts amid changing circumstances.
Matthew 3:3
Jesus’ forerunner is linked to the “prepare the way” theme, showing how Isaiah 40’s highway imagery points to God coming to His people.
Revelation 14:13
The call to faithful perseverance resonates with Isaiah 40’s promise that God’s purpose and word endure beyond fading human life.
Frequently Asked Questions
What is the main message of this devotional commentary on Isaiah 40?
Isaiah 40 centers on God’s comfort and the reliability of His word. It calls the faithful to prepare for the LORD’s coming, to fear less because God is incomparable, and to trust that waiting will renew strength. Human power fades, but God’s promises stand.
How does Isaiah 40 connect comfort with repentance and forgiveness?
The comfort is covenant-shaped: God speaks of warfare being accomplished and iniquity being pardoned. That means comfort is not denial of sin, but an announcement that judgment has run its course and grace is available. Comfort therefore leads the heart to realignment.
What does “wait upon the LORD” mean in the meaning of Isaiah 40?
“Wait” is active trust, not passive resignation. It implies confident expectation, perseverance, and continued dependence on God’s timing. Isaiah teaches that this waiting renews strength—especially when youth and personal resources feel insufficient.
Why does Isaiah emphasize that “all flesh is grass”?
Isaiah uses human frailty to break the habit of placing ultimate hope in visible success, health, or power. Once you see how temporary flesh is, God’s everlasting word becomes the sure foundation for hope and courage.
A Short Prayer
Lord, You are the everlasting God who does not faint or grow weary. Teach my heart to receive Your comfort and to trust Your word when circumstances feel like wilderness. Straighten what is crooked in me and prepare my way by Your Spirit. Renew my strength as I wait for You, that I may walk steadily in obedience and proclaim, “Behold your God.” Amen.
Key Takeaway: Isaiah 40 teaches that God’s everlasting word and sovereign power can replace fear with comfort and renew the strength of those who wait on Him.
