2 Kings 20:7-11 makes the sundial sign about confirming Hezekiah's healing from a boil. Isaiah 38:4-8 (in the parallel narrative) makes it about confirming the promise of fifteen additional years and deliverance from Assyria. The two accounts of the same prodigy assign different referents to the sign.
Proposed answers
People have answered this in several ways; GEBible presents them as equal peers.
7Isaiah said, “Take a cake of figs.” They took and laid it on the boil, and he recovered.8Hezekiah said to Isaiah, “What will be the sign that Yahweh will heal me, and that I will go up to Yahweh’s house the third day?”9Isaiah said, “This will be the sign to you from Yahweh, that Yahweh will do the thing that he has spoken: should the shadow go forward ten steps, or go back ten steps?”10Hezekiah answered, “It is a light thing for the shadow to go forward ten steps. No, but let the shadow return backward ten steps.”11Isaiah the prophet cried to Yahweh; and he brought the shadow ten steps backward, by which it had gone down on the sundial of Ahaz.
4Then Yahweh’s word came to Isaiah, saying,5“Go, and tell Hezekiah, ‘Yahweh, the God of David your father, says, “I have heard your prayer. I have seen your tears. Behold, I will add fifteen years to your life.6I will deliver you and this city out of the hand of the king of Assyria, and I will defend this city.7This shall be the sign to you from Yahweh, that Yahweh will do this thing that he has spoken.8Behold, I will cause the shadow on the sundial, which has gone down on the sundial of Ahaz with the sun, to return backward ten steps.” ’ ” So the sun returned ten steps on the sundial on which it had gone down.
What follows is one scholar’s way of reading this disagreement— a critical-historical view that often concludes the texts genuinely disagree. It draws on the peer-reviewed sources listed below and stands as one position among the answers above, presented for transparency, not as GEBible’s position.
How critical scholarship weighs this: Leans toward a genuine contradiction
This summarizes where critical scholarship tends to land on this tension — a report on the field’s center of gravity, not GEBible’s own ruling.
Second Kings 20 and Isaiah 38 share the bulk of the Hezekiah-illness pericope, almost certainly drawing on a common source, yet they diverge on what the reversed shadow on the steps of Ahaz actually signifies. In 2 Kings 20:7-11 Isaiah applies a cake of figs (develet te'enim) to the boil (shechin), Hezekiah recovers, and only then does Hezekiah request a sign confirming that he will be healed and go up to the house of Yahweh on the third day. The shadow-reversal is, on this telling, a sign anchored to the healing and the temple-ascent. In Isaiah 38:4-8 the editor has reorganized the sequence: Yahweh first promises fifteen added years together with deliverance of the city from the king of Assyria (38:5-6), and the shadow-sign then confirms that combined promise; the fig-poultice and recovery are pushed to the end (38:21-22), where many critics regard them as a displaced fragment awkwardly reattached.
The strongest harmonizing case, argued by John Oswalt in his NICOT volume and earlier by Edward J. Young, treats the two notices as complementary rather than contradictory: a single miracle can authenticate several promises simultaneously, so the sign confirmed healing, added years, and the deliverance of Jerusalem all at once, with each narrator foregrounding a different facet. This reading deserves a fair hearing, because the logic is sound — a prodigy is not exhausted by any one referent, and nothing prevents one sign from sealing a multi-clause oracle. To that extent the tension is partially harmonizable: there is no contradiction in saying the shadow confirmed both Hezekiah's recovery and the city's safety.
What the harmonization cannot absorb is the deliberate editorial reshaping that produced the difference. In 2 Kings the healing is reported (20:7) before Hezekiah asks for the sign (20:8), so the prodigy retroactively confirms an act already accomplished and looks forward to the temple visit. In Isaiah the promise precedes the sign and the sign precedes the healing, and the whole episode is reframed around the Assyrian threat — the very crisis that dominates Isaiah 36-37. Joseph Blenkinsopp in the Anchor Bible and Brevard Childs in the Old Testament Library both read this as editorial rearrangement serving a different theological agenda, not merely a difference of emphasis. Hans Wildberger argues that Isaiah 36-39 was incorporated into the Isaiah scroll as a historical appendix (closely paralleling 2 Kings 18-20), and that the placement makes the deliverance of Zion from Sennacherib the organizing concern; Christopher Seitz develops the same point, treating these chapters as a hinge constructed to bind the Assyrian material to the Babylonian horizon opened by chapter 39. On that reading the 2 Kings version preserves the older, simpler healing narrative, and the Isaianic editor re-anchored the sign to the deliverance promise because deliverance is what his scroll is about.
Two further data points sharpen the picture. First, the Great Isaiah Scroll (1QIsa-a) and the Masoretic Isaiah lack the equivalent of Hezekiah's question about whether the shadow should go forward or back, which 2 Kings 20:9-10 supplies at length; the Isaiah account is leaner and more thesis-driven. Second, Cogan and Tadmor note that the figs-and-boil notice fits organically in Kings but reads as an intrusive coda in Isaiah, where it sits after the sign it was meant to occasion — a classic sign of redactional relocation. The astronomical mechanism (a shadow retreating ten ma'alot) is identical in both; what shifts is the literary purpose to which the prodigy is bent.
Where the critical reading lands: harmonizable as to logic — one sign can confirm several promises — but the accounts genuinely differ in structure and primary referent through editorial reshaping of a shared source, so the tension is partially, not fully, dissolved.
Sources for this reading
Joseph Blenkinsopp, Isaiah 1-39 (Anchor Bible 19; Doubleday, 2000) pp. 477-484
Hans Wildberger, Isaiah 28-39: A Continental Commentary (Fortress, 2002) pp. 437-460
Brevard S. Childs, Isaiah (Old Testament Library; Westminster John Knox, 2001) pp. 277-285
Mordechai Cogan and Hayim Tadmor, II Kings (Anchor Bible 11; Doubleday, 1988) pp. 254-263
John N. Oswalt, The Book of Isaiah, Chapters 1-39 (NICOT; Eerdmans, 1986) pp. 671-685
Christopher R. Seitz, Zion's Final Destiny: The Development of the Book of Isaiah (Fortress, 1991) pp. 149-191
Edward J. Young, The Book of Isaiah, Vol. II (Eerdmans, 1969) pp. 510-528
Examining the tension
What follows is one scholar’s way of reading this disagreement — a critical-historical view that often concludes the texts genuinely disagree. It draws on the peer-reviewed sources listed below and stands as one position among the answers above, presented for transparency, not as GEBible’s position.
How critical scholarship weighs this: Leans toward a genuine contradiction
This summarizes where critical scholarship tends to land on this tension — a report on the field’s center of gravity, not GEBible’s own ruling.
Second Kings 20 and Isaiah 38 share the bulk of the Hezekiah-illness pericope, almost certainly drawing on a common source, yet they diverge on what the reversed shadow on the steps of Ahaz actually signifies. In 2 Kings 20:7-11 Isaiah applies a cake of figs (develet te'enim) to the boil (shechin), Hezekiah recovers, and only then does Hezekiah request a sign confirming that he will be healed and go up to the house of Yahweh on the third day. The shadow-reversal is, on this telling, a sign anchored to the healing and the temple-ascent. In Isaiah 38:4-8 the editor has reorganized the sequence: Yahweh first promises fifteen added years together with deliverance of the city from the king of Assyria (38:5-6), and the shadow-sign then confirms that combined promise; the fig-poultice and recovery are pushed to the end (38:21-22), where many critics regard them as a displaced fragment awkwardly reattached.
The strongest harmonizing case, argued by John Oswalt in his NICOT volume and earlier by Edward J. Young, treats the two notices as complementary rather than contradictory: a single miracle can authenticate several promises simultaneously, so the sign confirmed healing, added years, and the deliverance of Jerusalem all at once, with each narrator foregrounding a different facet. This reading deserves a fair hearing, because the logic is sound — a prodigy is not exhausted by any one referent, and nothing prevents one sign from sealing a multi-clause oracle. To that extent the tension is partially harmonizable: there is no contradiction in saying the shadow confirmed both Hezekiah's recovery and the city's safety.
What the harmonization cannot absorb is the deliberate editorial reshaping that produced the difference. In 2 Kings the healing is reported (20:7) before Hezekiah asks for the sign (20:8), so the prodigy retroactively confirms an act already accomplished and looks forward to the temple visit. In Isaiah the promise precedes the sign and the sign precedes the healing, and the whole episode is reframed around the Assyrian threat — the very crisis that dominates Isaiah 36-37. Joseph Blenkinsopp in the Anchor Bible and Brevard Childs in the Old Testament Library both read this as editorial rearrangement serving a different theological agenda, not merely a difference of emphasis. Hans Wildberger argues that Isaiah 36-39 was incorporated into the Isaiah scroll as a historical appendix (closely paralleling 2 Kings 18-20), and that the placement makes the deliverance of Zion from Sennacherib the organizing concern; Christopher Seitz develops the same point, treating these chapters as a hinge constructed to bind the Assyrian material to the Babylonian horizon opened by chapter 39. On that reading the 2 Kings version preserves the older, simpler healing narrative, and the Isaianic editor re-anchored the sign to the deliverance promise because deliverance is what his scroll is about.
Two further data points sharpen the picture. First, the Great Isaiah Scroll (1QIsa-a) and the Masoretic Isaiah lack the equivalent of Hezekiah's question about whether the shadow should go forward or back, which 2 Kings 20:9-10 supplies at length; the Isaiah account is leaner and more thesis-driven. Second, Cogan and Tadmor note that the figs-and-boil notice fits organically in Kings but reads as an intrusive coda in Isaiah, where it sits after the sign it was meant to occasion — a classic sign of redactional relocation. The astronomical mechanism (a shadow retreating ten ma'alot) is identical in both; what shifts is the literary purpose to which the prodigy is bent.
Where the critical reading lands: harmonizable as to logic — one sign can confirm several promises — but the accounts genuinely differ in structure and primary referent through editorial reshaping of a shared source, so the tension is partially, not fully, dissolved.
Sources for this reading