Isaiah 40:28 · Bible study
Isaiah 40:28 Commentary: The Everlasting God Never Grows Weary
Hebrew · 10 what the commentators say
Meaning in one sentence
Isaiah 40:28 declares God's eternal nature, unfailing strength, and unsearchable understanding, answering Israel's despair in exile with hope.
Research Summary
- Meaning: God is eternal, never weary, and infinitely wise, a foundation for trust even when His ways are hidden.
- Key words: everlasting (o·Lam, perpetual), Creator (bo·Re, maker), faint (ya·aph, grow weary), weary (ya·ga, toil), unsearchable (che·qer, beyond investigation).
- Main debate: How to reconcile God’s unsearchable ways with His attentive care, some emphasize mystery, others emphasize His revealed faithfulness.
- Theological theme: God’s transcendence (His eternal, omnipotent, omniscient nature) coupled with His immanence (He gives power to the faint).
- Best use: Encouragement for those who are weary and feel forgotten, reminding them of the character of the God who neither slumbers nor sleeps.
Translation Comparison
BSB Berean Standard Bible 2020
Do you not know? Have you not heard? The LORD is the everlasting God, the Creator of the ends of the earth. He will not grow tired or weary; His understanding is beyond searching out.
WEB World English Bible 2000
Haven’t you known? Haven’t you heard? The everlasting God, Yahweh, the Creator of the ends of the earth, doesn’t faint. He isn’t weary. His understanding is unsearchable.
KJV King James Version 1769
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.
ASV American Standard Version 1901
Hast thou not known? hast thou not heard? The everlasting God, Jehovah, the Creator of the ends of the earth, fainteth not, neither is weary; there is no searching of his understanding.
YLT Young's Literal Translation 1898
Hast thou not known? hast thou not heard? The God of the age--Jehovah, Preparer of the ends of the earth, Is not wearied nor fatigued, There is no searching of His understanding.
Darby Darby Bible 1890
Dost thou not know, hast thou not heard, that the everlasting God, Jehovah, the Creator of the ends of the earth, fainteth not nor tireth? There is no searching of his understanding.
Douay-Rheims Douay-Rheims Bible 1899
Knowest thou not, or hast thou not heard? the Lord is the everlasting God, who hath created the ends of the earth: he shall not faint, nor labour, neither is there any searching out of his wisdom.
Translations in other languages (10 available)
¿ No has sabido, no has oído que el Dios del siglo es Jehová, el cual crió los términos de la tierra? No se trabaja, ni se fatiga con cansancio, y su entendimiento no hay quien lo alcance.
Por acaso não sabes, nem ouviste, que o eterno Deus, o SENHOR, o criador dos confins da terra, não se cansa, nem se fatiga, e que seu entendimento é incompreensível?
Ne le sais-tu pas? Ne l’ as-tu pas appris?
Weißt du nicht? hast du nicht gehört? Der HERR, der ewige Gott, der die Enden der Erde geschaffen hat, wird nicht müde noch matt; sein Verstand ist unausforschlich.
Weet gij het niet? Hebt gij niet gehoord, dat de eeuwige God, de HEERE, de Schepper van de einden der aarde, noch moede noch mat wordt? Er is geen doorgronding van Zijn verstand.
Non lo sai tu? non l’hai tu udito? L’Eterno è l’Iddio d’eternità, il creatore degli estremi confini della terra. Egli non s’affatica e non si stanca; la sua intelligenza è imperscrutabile.
Izali nie wiesz? izaliś nie słyszał, że Bóg wieczny Pan, który stworzył granice ziemi, nie ustanie, ani się spracuje, i że nie może być dościgniona mądrość jego?
Разве ты не знаешь? разве ты не слышал, что вечный Господь Бог, сотворивший концы земли, не утомляется и не изнемогает? разум Его неисследим.
你豈不 曾知道嗎？你豈 不 曾聽見嗎？永在的 神 耶和華，創造 地 極的主，並不 疲乏，也不 困倦；他的智慧 無法 測度。
Have you no knowledge of it? has it not come to your ears? The eternal God, the Lord, the Maker of the ends of the earth, is never feeble or tired; there is no searching out of his wisdom.
Verse in Context
Original Language (Biblical Hebrew)
Old Testament · Biblical Hebrew · Isaiah 40:28
Source: STEPBible TAGNT/TEHB (CC-BY 4.0). Click or tap a morphology code to see the full parsing.
Scholars' Consensus
Commentators across traditions agree that the twin rhetorical questions in Isaiah 40:28 form a sharp reproof. Barnes notes that Israel had abundant opportunity to learn God's character from their history and the traditions of their fathers; their doubt is therefore inexcusable. Calvin calls the people “unteachable” for not profiting from the teaching of the Law and God's past benefits. Gill adds that they should have known from Scripture and the experience of the faithful throughout the ages. All affirm the four divine attributes presented: God is everlasting (eternal, unchangeable), the Creator of the ends of the earth (sovereign over the whole world), never faints nor wearies (unlike humans), and possesses unsearchable understanding (infinite wisdom). Keil & Delitzsch point out that God does not grow faint like a man who requires nourishment; His power is self-sustaining. The consensus is that these attributes are meant to replace despair with trust, a trust grounded in who God has always shown Himself to be.
How settled is the interpretation?
Interpretive difficulty: Low
What is clear: God is eternal, never weary, the Creator of all, and His understanding is beyond full human comprehension — these certainties form the basis for trusting Him even when His ways are hidden.
What Scholars Agree and Debate
| Topic | Agreed | Debated |
|---|---|---|
| Why Israel should have known | Israel had been taught God’s character through Scripture, history and tradition, their doubt was a failure to apply what they knew. | Some traditions emphasize the individual’s responsibility to recall God’s works; others stress the community’s role in passing down the story. |
| The meaning of “unsearchable” | God’s understanding is beyond full human grasp. | Calvin sees it as a reason for humble trust; others, like Keil & Delitzsch, focus on the comfort that God alone knows the right time to act. |
| Application to suffering | The verse is directly relevant to those in distress, offering hope. | Some read it as a call to change our perspective; others emphasize that suffering is not explained by God’s attributes but endured with confidence in them. |
Historical & Cultural Context
Isaiah 40 marks a major turning point in the book. The first thirty-nine chapters focus largely on judgment; beginning with chapter 40, the tone shifts to consolation for a people facing exile. The immediate audience of this passage is the community of Israelites in Babylonian captivity. Their complaint echoes in verse 27: “My way is hidden from Yahweh, and the justice due me is disregarded by my God.” Cut off from their land and temple, they feel forgotten.
The prophet does not minimize their pain. Instead, he challenges their assumptions by calling to mind what they already know. The questions “Haven’t you known? Haven’t you heard?” imply that the answer is yes, they do know, but they have forgotten to apply that knowledge. The title “the everlasting God” (Hebrew o·Lam, perpetual, eternal) recalls the covenant name used by Abraham in Genesis 21:33. The description “Creator of the ends of the earth” asserts that God’s power extends beyond the borders of Israel, even into Babylon. Keil & Delitzsch note that this phrasing is deliberate: “the ends of the earth” include even the enemy territory where the exiles now live.
The cultural context of exile often led to the temptation to view foreign gods as equal to or stronger than Yahweh. By invoking creation, the prophet argues that no part of the earth lies outside God’s domain. The three-fold declaration, no fainting, no weariness, unsearchable understanding, directly counters the feeling that God has lost interest or run out of resources. The surrounding verses (29-31) reinforce this: God does not merely have strength for Himself; He gives power to the weak, so that those who wait on Him will renew their strength.
Textual Notes
Adam Clarke notes that twenty-four manuscripts, two editions, the Septuagint and Vulgate read a conjunction ("and") in the final clause, giving “and that his understanding is unsearchable.” The meaning is unaffected. The consulted sources record no other significant textual variants for this verse.
Reception History
Isaiah 40:28 has been a source of comfort for believers enduring exile, persecution, and personal trials. Early church fathers used it to contrast the living God with the lifeless idols of the nations, emphasizing God’s eternal and inexhaustible nature. During the Reformation, commentators like Calvin and later, Matthew Henry and Gill, drew on this verse to encourage Christians who felt abandoned by God or overwhelmed by circumstances. In modern times, the verse is frequently cited in sermons and hymns about waiting on God, especially paired with verses 29, 31. Its language has shaped songs that declare God’s unfailing strength, and it remains a touchstone for those who feel their own resources are spent.
Preaching This Verse
Three-point outline
- The Reproof, “Haven’t you known? Haven’t you heard?” God’s people have been taught His character through Scripture, history and experience. Their doubt is addressed not by new revelation but by recalling what they already know.
- The Revelation, God is everlasting, Creator, never weary, and His understanding is unsearchable. Each attribute is a direct answer to the complaint that God is hidden or indifferent.
- The Response, Because of who God is, His people can trust Him even when they feel He has overlooked their cause. The call is to wait on Him (v.31), not to give up.
Five-point outline
- God is everlasting, He has no beginning and no end. He is not like the gods of the nations, who rise and fall.
- God is the Creator of the ends of the earth, His authority reaches every corner, including the place of our suffering.
- God never faints or grows weary, No burden exhausts Him. He does not need rest or renewal.
- God’s understanding is unsearchable, His wisdom cannot be fully comprehended, so His timing and methods may remain mysterious, yet they are not random.
- God gives strength to the weak, The gap between His power and our need is the very space where He works (v.29).
Illustration hooks
- The parent who never stops caring for a child, even after years of sleepless nights. Human love wears thin; God’s attention never does.
- A runner who hits “the wall” and feels they cannot go on, only to find a second wind from an external source. That external source is God’s own strength given to the waiting heart.
- The scientist who studies the universe and realizes that human intelligence can measure stars but cannot grasp the mind that placed them. “His understanding is unsearchable” is not a problem to solve but a truth to adore.
Questions your congregation is asking
- Why does God feel distant when I am suffering?
- How can I trust God’s timing when I feel He is late?
- Does God really see my specific situation, or am I just one of billions?
Leading a Discussion
In times of suffering, we may feel that God has overlooked us. Isaiah 40:28 challenges that assumption by reminding us who God is, and who we have always known Him to be. This study invites the group to let the text reshape both their thinking and their trust.
Discussion questions
- What complaint does Israel voice in verse 27? How does it reveal what they believe about God at that moment?
- The prophet begins with two questions: “Haven’t you known? Haven’t you heard?” Why are these questions powerful? What does their form imply about the people’s responsibility?
- List the four attributes of God given in verse 28. How does each one directly address the complaint of verse 27?
- The title “Creator of the ends of the earth” is especially significant for exiles in Babylon. Why? How does it enlarge your view of God’s concern for you today?
- What does it mean that God’s understanding is “unsearchable”? Is that a discouraging statement or a comforting one? Why?
- How do verses 29-31 flow from verse 28? What does it mean that the never-weary God gives strength to the weary?
- In what area of your life right now do you need to remember that God does not faint and that His understanding is beyond yours? How might that memory change your next step?
Word Study
The key original-language words in this verse. Select any word for its full lexicon entry — meaning, every occurrence in Scripture, and related words.
Cross-References
Source: Treasury of Scripture Knowledge (TSK, public domain)
| Genesis 21:33 | Abraham planted a tamarisk tree in Beersheba, and there he called on the name of Yahweh, the Everlasting God. |
| Deuteronomy 33:27 | The eternal God is your dwelling place. Underneath are the everlasting arms. He thrust out the enemy from before you, and said, ‘Destroy!’ |
| I Samuel 2:10 | Those who strive with Yahweh shall be broken to pieces. He will thunder against them in the sky. “Yahweh will judge the ends of the earth. He will give strength to his king, and exalt the horn of his anointed.” |
| Psalms 90:2 | Before the mountains were born, before you had formed the earth and the world, even from everlasting to everlasting, you are God. |
| Psalms 138:8 | Yahweh will fulfill that which concerns me. Your loving kindness, Yahweh, endures forever. Don’t forsake the works of your own hands. |
| Psalms 139:6 | This knowledge is beyond me. It’s lofty. I can’t attain it. |
| Psalms 147:5 | Great is our Lord, and mighty in power. His understanding is infinite. |
| Isaiah 40:21 | Haven’t you known? Haven’t you heard? Haven’t you been told from the beginning? Haven’t you understood from the foundations of the earth? |
Interlinear and lexical data from STEPBible (CC BY 4.0). Cross-reference data from OpenBible.info (CC BY 4.0). Commentaries are public domain.
For personal reflection
Read the devotional page — prayer, application, and "for families"
What the Commentators Say
9 public-domain commentaries, condensed into plain language.
Adam Clarke's Commentary Methodist/Wesleyan 1826
Clarke notes that many ancient manuscripts and versions, including the Septuagint and Vulgate, add the conjunction "and" before the phrase, reading "and that his understanding is unsearchable." This textual variant connects this statement more tightly to the preceding line about God's incomparable nature.
Barnes' Notes on the Bible Protestant 1832
Barnes emphasizes that the prophet's questions are a reproof: the Jewish people already knew God's faithfulness from their history and traditions yet still complained of being forsaken. In times of trial, they should recall those lessons rather than doubt. God's eternal nature and inexhaustible power guarantee He can and will save them.
Calvin's Commentaries Reformed 1564
Calvin argues that if people truly believed God is eternal and never changes, they would have no reason to doubt his care. He rebukes the Jews for not learning this from God's works and words, leaving them doubly guilty. God's wisdom is so deep that no one can fully explore it, and he never grows tired of doing good.
Cambridge Bible for Schools and Colleges Anglican 1880
The commentator stresses that God's eternal, unchangeable nature and infinite power directly fuel hope for his people. Because the Lord never grows weary, he becomes the very source of strength for those who are exhausted, as long as they wait on him in faith.
Geneva Bible Notes Reformed 1599
The commentator stresses that God's power is displayed in creation and his strength never runs low, unlike human energy. The point is that God does not faint or grow weary, and his wisdom is beyond human ability to fully explore or comprehend. This grounds confidence in his everlasting nature.
Gill's Exposition of the Bible Baptist 1748
Gill stresses that God, the everlasting Creator and sustainer of the entire world, never grows faint or weary from his constant work. Because his understanding is infinite and beyond human search, his people have no reason for doubt or despair; he is fully able to care for them wherever they are.
Jamieson-Fausset-Brown Commentary Protestant 1871
JFB notes that God's attributes of being everlasting and having unsearchable understanding are meant to comfort His afflicted people. Because His understanding cannot be fully explored, He cannot make mistakes or overlook their cause. He is never faint or weary from constantly attending to the countless needs of His people.
Keil & Delitzsch OT Commentary Protestant 1876
Keil and Delitzsch emphasize that the double question in this passage confronts despair by contrasting human limitations with God's eternal nature. Unlike humans who need nourishment to sustain energy or can exhaust themselves through work, Jehovah never faints or grows weary. His unfathomable understanding means He alone knows the perfect moment to bring help.
Matthew Henry's Commentary Reformed/Presbyterian 1710
Matthew Henry stresses that the prophet shames the people's distrust by reminding them of their covenant names, Jacob and Israel, which testify to God's past faithfulness. He notes the reproof is a reasoned argument, not a harsh rebuke, asking them to examine whether their despair has any foundation.