Isaiah 54:10 in the King James Version reads, “For the mountains shall depart, and the hills be removed; but my kindness shall not depart from thee, neither shall the covenant of my peace be removed, saith the LORD that hath mercy on thee.” In the flow of Isaiah 54, this sentence is spoken as the LORD’s own assurance to a people who have known desolation and shame, and it stands as a pledge that what God is now promising will outlast everything that seems most permanent. The chapter as a whole follows the great proclamation of the suffering Servant in Isaiah 53, and Isaiah 54 turns from atonement and sorrow to restoration and settled peace. The voice of consolation addresses Zion, pictured as a woman once barren and forsaken, now called to enlarge her place because her latter days will overflow with children and stability. Against that backdrop, verse 10 functions like an oath: the LORD compares the strongest, most immovable features of the world—mountains and hills—to the seeming permanence of his favor, only to say that even those enduring landmarks could disappear sooner than his “kindness” and his “covenant of my peace.”

The imagery is deliberately extreme. Mountains and hills are symbols of what human beings treat as fixed realities, the parts of creation that look unchangeable across generations. To say “the mountains shall depart, and the hills be removed” is not chiefly a prediction meant to fix the reader’s attention on geology; it is prophetic symbolism meant to stretch the imagination to its limit. If the most stable things you can see were suddenly gone, God says, even that would not be as decisive a change as the removal of his steadfast favor toward his restored people. The verse is written in the language of covenant reassurance, not mere sentiment. “My kindness” in KJV carries the sense of covenant love and faithful mercy, a committed benevolence rooted in God’s own character rather than in the recipient’s strength. The force of “shall not depart from thee” is personal and relational: the LORD is not only granting gifts; he is binding himself in faithful posture toward “thee,” the addressed Zion, the community he has chosen to redeem and rebuild.

The second half of the verse intensifies the first by naming the promise as a covenant: “neither shall the covenant of my peace be removed.” Peace here is not simply the absence of conflict but a state of settled well-being established by God—wholeness, safety, and restored order after judgment. In Isaiah 54 the theme of peace is tied to the end of wrath and the re-establishment of God’s favor, and verse 10 places that peace in covenant form, meaning it is not fragile, not dependent on shifting circumstances, and not subject to cancellation as though it were a temporary mood. The “covenant” language also ties this promise to the broader biblical pattern in which God binds himself by word and oath, creating a dependable foundation for hope. Immediately around this verse, Isaiah 54 speaks of God’s anger as something that was real but not final, and of his mercy as what ultimately governs the relationship. The contrast is essential: the chapter does not pretend there was no rupture; it declares that mercy will have the last word. Verse 10 seals that claim by placing mercy above the permanence of creation’s most permanent features.

“Saith the LORD that hath mercy on thee” is more than a closing formula; it is the ground of the promise. The reason the covenant of peace cannot be removed is not because Zion is strong enough to hold it, but because the LORD is the kind of God “that hath mercy.” The speaker identifies himself by an attribute, and that attribute is the guarantee: the covenant stands because mercy stands. This is why the verse is so often read as comfort to those who feel the instability of life, the shaking of visible supports, or the fear that past failure has made God’s favor uncertain. The verse does not deny that upheaval can happen—indeed it imagines the most dramatic upheaval possible—but it declares that God’s kindness is more durable than the world’s apparent stability. In the context of Isaiah 54’s restoration language—enlarged habitation, rebuilt foundations, children taught of the LORD, and great peace—the verse is a hinge between the memory of judgment and the certainty of enduring reconciliation. It insists that what God is building for his people is founded on an unremovable covenant, and that the ultimate significance of their future is anchored not in the permanence of mountains but in the permanence of divine mercy.