Job 37:18 · Bible study
Job 37:18 Commentary: The Sky as a Molten Mirror
Hebrew · 10 what the commentators say
Meaning in one sentence
Explore Elihu's challenge to Job: the sky as a strong molten mirror. Understand the Hebrew terms and the rhetorical force of this verse.
Research Summary
- Meaning: Elihu challenges Job to recognize God's sole creative power by describing the sky as a strong cast metal mirror.
- Key words: raqa (beat out, spread), shachaq (clouds/sky), chazaq (strong/hard), re'i (mirror), yahtsaq (pour, cast).
- Main debate: Whether the verse refers to the original creation of the firmament or to God's control of the clear sky after storms.
- Theological theme: Human limitation before divine wisdom and power.
- Best use: To humble pride and invite awe in worship.
Translation Comparison
BSB Berean Standard Bible 2020
can you, like Him, spread out the skies to reflect the heat like a mirror of bronze?
WEB World English Bible 2000
Can you, with him, spread out the sky, which is strong as a cast metal mirror?
KJV King James Version 1769
Hast thou with him spread out the sky, which is strong, and as a molten looking glass?
ASV American Standard Version 1901
Canst thou with him spread out the sky, Which is strong as a molten mirror?
YLT Young's Literal Translation 1898
Thou hast made an expanse with Him For the clouds--strong as a hard mirror!
Darby Darby Bible 1890
Hast thou with him spread out the sky, firm, like a molten mirror?
Douay-Rheims Douay-Rheims Bible 1899
Thou perhaps hast made the heavens with him, which are most strong, as if they were of molten brass.
Translations in other languages (10 available)
¿ Extendiste tú con él los cielos, firmes como un espejo sólido?
acaso podes estender com ele os céus, que estão firmes como um espelho fundido?
Peux-tu comme lui étendre les cieux,
ja, du wirst mit ihm den Himmel ausbreiten, der fest ist wie ein gegossener Spiegel.
Hebt gij met Hem de hemelen uitgespannen, die vast zijn, als een gegoten spiegel?
Puoi tu, come lui, distendere i cieli e farli solidi come uno specchio di metallo?
Ukażże nam, co mu mamy powiedzieć; bo nie możemy sporządzić słów dla ciemności.
Ты ли с Ним распростер небеса, твердые, как литое зеркало?
你豈能與 神 同鋪 穹蒼嗎？這穹蒼堅硬，如同鑄成的 鏡子。
Will you, with him, make the skies smooth, and strong as a polished looking-glass?
Verse in Context
Original Language (Biblical Hebrew)
Old Testament · Biblical Hebrew · Job 37:18
Source: STEPBible TAGNT/TEHB (CC-BY 4.0). Click or tap a morphology code to see the full parsing.
Scholars' Consensus
Commentators agree this verse is a rhetorical challenge from Elihu to Job, designed to humble him by contrasting God's creative power with human frailty. The verb translated 'spread out' (Hebrew raqa) carries connotations of beating or stamping out metal, as a metalworker spreads a sheet of bronze. As Barnes notes, the ancient world commonly imagined the sky as a solid expanse, a 'firmament' (Gen 1:6). The comparison to a 'molten mirror' (re'i mutzak) evokes the polished bronze mirrors used at that time (Ex 38:8). The point is not scientific accuracy but the sheer impossibility of Job doing any such thing. Gill and Wesley both emphasize that Elihu asks whether Job was God's assistant in creation. The question 'Can you, with him?' implies that Job is utterly unable to join God in even this one act. The sky's strength and clarity serve as a visible sign of a wisdom and power far beyond human reach.
How settled is the interpretation?
Interpretive difficulty: Medium
Main views:
- Creation of the firmament: Points to Gen 1:6-8 and the verb raqa used elsewhere for spreading out the heavens (Job 9:8, Ps 104:2). Sees the verse as describing the original solid dome.
- Clear sky after storms: Keil & Delitzsch argue from the context of storms and heat (vv 15-17) that the sky is the bright, hard-looking sky that appears after the wind clears the clouds.
What is clear: The verse is a rhetorical challenge to Job, emphasizing human inability and God's sole power over the heavens.
What Scholars Agree and Debate
| Topic | Agreed | Debated |
|---|---|---|
| Original creation vs. present weather | Both views see the verse as pointing to God's sovereign power over the sky. | Some, like Gill, see it as the first creation of the firmament (Gen 1:6). Others, including Keil & Delitzsch, understand it as God's ongoing work of clearing the sky after storms. |
| The nature of the sky's strength | The Hebrew word chazaq implies firmness, and the mirror imagery suggests polish and clarity. | Whether the sky is literally solid (as ancient cosmology held) or described phenomenologically (popular language, as Barnes argues). |
| 'With him' meaning | The phrase underscores Job's inability to be God's co-worker. | Some read 'with him' as 'like him' (Cambridge), others as 'as his assistant' (Gill). |
Historical & Cultural Context
In the ancient Near East, the sky was commonly understood as a solid dome or 'firmament' that held back waters above the earth (Gen 1:6-8). The word raqa used here appears in metalworking contexts, such as beating gold into thin sheets for the tabernacle (Ex 39:3). To call the sky 'strong as a cast metal mirror' drew on everyday experience: mirrors were made of polished bronze or brass (Ex 38:8), not glass. The Hebrew term shachaq often refers to thin clouds, and the phrase may picture the clear, burnished sky after a storm, when the heat is fierce and the dome seems hard and bright (Cambridge Bible).
Literarily, Elihu's speech builds to this question after describing how God controls lightning, clouds, and rain (Job 37:14-17). The rhetorical format (can you?) directly challenges Job's earlier complaints about God's justice. This same style will be taken up by God himself in chapters 38-41. By invoking the image of a molten mirror, Elihu forces Job to confront a creation that is both beautiful and beyond human control. The mirror does not just reflect light; it reflects the glory of its maker (Psalms 19:1). In that sense, the sky invites awe, not argument.
Textual Notes
The supplied sources note no significant manuscript variations for this verse. The Hebrew text is stable across traditions.
Reception History
Throughout church history, this verse has been read as a call to humility before God's creative power. Its vivid imagery of the sky as a molten mirror has inspired reflection on both the beauty and the mystery of creation. Ancient and medieval commentators often used it to illustrate the 'firmament' as a proof of divine design. Reformers like Calvin saw in it a rebuke to human pride. In modern times, the verse is sometimes cited in discussions of biblical cosmology and the use of phenomenological language in Scripture. Across traditions, it remains a text that draws the reader from questioning to worship.
Preaching This Verse
Three-point outline
- God alone spreads the sky. The verb raqa describes an act of creation that only God performs. Job 9:8 confirms this. No human can claim partnership in this work.
- The sky's strength rebukes our pride. The comparison to a molten mirror emphasizes permanence and clarity. It stands as a visible reminder that some realities are simply beyond us.
- The mirror calls us to humility. A polished surface reflects what is true. When we look at the heavens, we see our smallness, and God's greatness.
Five-point outline
- The image of the firmament. The Bible speaks of the sky as an expanse (Gen 1:6). Ancient hearers understood it as solid, but the point is God's sovereign ordering of creation.
- The craftsmanship of God. Raqa implies beating out metal. God is a master craftsman, not a distant watchmaker.
- The polished mirror. Bronze mirrors were highly reflective. The sky mirrors God's glory, and our limitations.
- The question itself. 'Can you, with him?' is a direct challenge to anyone who thinks they can direct God. Job's suffering does not give him authority to judge the Creator.
- The invitation to stand still. In verse 14 Elihu says 'stand still and consider.' This verse invites us to stop arguing and start wondering.
Illustration hooks
- A child trying to stretch a bed sheet across a mattress alone, the corners keep popping off. It takes two, and even then the sheet never stays tight. The sky is God's sheet, stretched without help.
- Looking at a polished bronze mirror with a single scratch. You notice the flaw immediately, but the mirror itself is beyond your ability to make or repair. So it is with God's world: we see one flaw and think we understand the whole.
Questions your congregation is asking
- Does this verse mean the Bible teaches that the sky is actually solid metal? How should we understand ancient cosmology?
- If God is so powerful, why does he let Job suffer? Elihu doesn't give a direct answer, he points to the bigger picture.
- How can I 'stand still' when my life is falling apart? What does that look like practically?
Leading a Discussion
Elihu's question forces us to confront our limitations. As you study this verse, consider where you need to acknowledge God's greatness instead of questioning his justice. The image of a molten mirror invites awe, not argument.
Discussion questions
- Read Job 37:14-18 aloud. What is Elihu's tone as he speaks to Job? Why does he start with 'listen' and 'stand still'?
- The verb 'spread out' (raqa) is used in metalworking. What does this tell you about how the writer pictures God's creative work?
- Why does Elihu compare the sky to a 'molten mirror'? What properties of a bronze mirror do you think he had in mind?
- Elihu says 'with him.' Does he mean Job should assist God, or that Job should do it in the same way God does? How does your answer change the meaning?
- In what ways do we, like Job, assume we could run the world better than God? Give a modern example.
- How does reflecting on God's power in creation help when you are suffering? Does it always feel comforting? Why or why not?
- What one thing from this study can you take into your week to help you 'stand still' before God?
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 1:6 | God said, “Let there be an expanse in the middle of the waters, and let it divide the waters from the waters.” |
| Genesis 1:8 | God called the expanse “sky”. There was evening and there was morning, a second day. |
| Exodus 38:8 | He made the basin of bronze, and its base of bronze, out of the mirrors of the ministering women who ministered at the door of the Tent of Meeting. |
| Job 9:8 | He alone stretches out the heavens, and treads on the waves of the sea. |
| Job 9:9 | He makes the Bear, Orion, and the Pleiades, and the rooms of the south. |
| Psalms 104:2 | He covers himself with light as with a garment. He stretches out the heavens like a curtain. |
| Psalms 148:4 | Praise him, you heavens of heavens, you waters that are above the heavens. |
| Psalms 148:6 | He has also established them forever and ever. He has made a decree which will not pass away. |
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
10 public-domain commentaries, condensed into plain language.
Adam Clarke's Commentary Methodist/Wesleyan 1826
Clarke notes that God arranged the sky and its elements precisely so that life could exist. He also says the whole heavens appear like a polished mirror on clear days reflecting many images.
Barnes' Notes on the Bible Protestant 1832
Barnes notes that Elihu's description of the sky as a solid, cast mirror reflects ancient popular language, not a scientific claim. The Bible's purpose is to teach religion, not science, so it uses everyday speech about the sky's appearance without endorsing any particular model of the cosmos.
Cambridge Bible for Schools and Colleges Anglican 1880
Cambridge Bible for Schools and Colleges notes the present tense shows God is doing this action now. It compares His power to that of a polished brass mirror.
Geneva Bible Notes Reformed 1599
The Geneva note draws attention to the striking image of the heavens as a molten glass—solid and firm like a mirror, yet transparent. This emphasizes not only their vastness but also their durable, polished quality, showing God's power in creating a sky that is both strong and clear.
Gill's Exposition of the Bible Baptist 1748
Gill stresses that humans had no part in spreading out the sky; it was God's work alone. He notes the sky appears fluid yet is strong and firm, comparing it to a molten mirror that is both clear and permanent. This sky displays God's glory and stands as one of His wondrous works.
Jamieson-Fausset-Brown Commentary Protestant 1871
Jamieson Fausset Brown notes the firmament is called strong pieces because it is firm. It is also called a molten looking glass because it resembles a bright smiling sky. You may find peace in this image of God’s creation.
Keil & Delitzsch OT Commentary Protestant 1876
Keil-Delitzsch read the Hebrew word for "whose" as "that" rather than "how," so they connect verse 17 directly with verse 18. This creates a pointed contrast: a human whose clothes grow hot in sultry weather dares to ask whether he has helped God stretch out the sky, a firm, molten mirror. The darkness that prevents Job from arranging words before God is the darkness of human understanding, not physical night.
Lange's Commentary Reformed 1857
Lange reads the sky described as strong and like a molten mirror as part of a gathering thunderstorm that Elihu sees already beginning. The poet likely intends this same storm to be the one from which God will soon speak, making Elihu’s description a direct preparation for the Lord’s own intervention.
Matthew Henry's Commentary Reformed/Presbyterian 1710
Henry notes that God’s knowledge is perfect (omniscient) because it is intuitive and complete. He sees everything truly at once without delay or partiality.
Wesley's Explanatory Notes Methodist/Wesleyan 1754
Wesley draws attention to the paradox of the sky: though thin and transparent, it is also firm and steadfast, like a polished metal mirror. In this celestial glass, we may behold the glory of God and the wisdom of his handiwork.