Genesis 6:5-7 has God resolving to destroy humanity precisely because "the wickedness of man was great" and "every imagination of the thoughts of his heart was only evil continually." After the flood, Genesis 8:21 has the same God promising never again to curse the ground or smite all living things for man's sake — and giving as his reason "for the imagination of man's heart is evil from his youth." The exact same reason that motivated the flood is now cited as a reason NOT to flood again.
Proposed answers
People have answered this in several ways; GEBible presents them as equal peers.
Because of man's wickedness God destroys him
And GOD saw that the wickedness of man [was] great in the earth, and [that] every imagination of the thoughts of his heart [was] only evil continually.
And the LORD said, I will destroy man whom I have created from the face of the earth; both man, and beast, and the creeping thing, and the fowls of the air; for it repenteth me that I have made them.
7Yahweh said, “I will destroy man whom I have created from the surface of the ground—man, along with animals, creeping things, and birds of the sky—for I am sorry that I have made them.”
Because of man's wickedness God will not destroy him
And the LORD smelled a sweet savour; and the LORD said in his heart, I will not again curse the ground any more for man's sake; for the imagination of man's heart [is] evil from his youth; neither will I again smite any more every thing living, as I have done.
21Yahweh smelled the pleasant aroma. Yahweh said in his heart, “I will not again curse the ground any more for man’s sake because the imagination of man’s heart is evil from his youth. I will never again strike every living thing, as I have done.
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: Widely regarded as 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.
This is among the cleaner contradictions in the primeval history, because the same Hebrew clause anchors two opposite divine resolutions. In Genesis 6:5 the LORD sees that "every imagination (Hebrew *yetser*) of the thoughts of his heart was only evil continually" (*kol-yetser mahshevot libbo raq ra*), and in consequence resolves to wipe out humanity. In Genesis 8:21, after the flood, the LORD declares he will never again curse the ground or smite every living thing, and gives as his reason "for the imagination of man's heart is evil from his youth" (*ki yetser lev ha-adam ra mineurav*). The same evil *yetser* of the heart functions as the explicit grounds — the *ki*, "because" — for opposite decisions: destruction in chapter 6, forbearance in chapter 8.
The most common harmonization, run by Kenneth Mathews in the NAC and in modified form by Gordon Wenham, reads 8:21 as God's mercy responding to Noah's sacrifice (8:20-21 opens with the LORD smelling the "sweet savour"). On this account the post-flood promise is a new covenantal disposition; circumstances have changed, so the two passages address different moments and do not strictly contradict. This works as narrative sequence, but it does not dissolve the contradiction in the stated reasoning, because the text does not ground the restraint in the sacrifice. The causal clause is explicit and it is about the human heart: God withholds future destruction *because* man's inclination is evil from youth. The very datum that triggered judgment now triggers patience.
This is also one of the standard exhibits for source-critical analysis of the flood narrative. Hermann Gunkel, Claus Westermann, and more recently Joel Baden assign both Genesis 6:5-8 and Genesis 8:20-22 to J, the Yahwist, who frames the flood with these two heart-of-man oracles. That assignment matters: the contradiction is internal to a single source, not merely an artifact of the documentary interweaving (the P strand contributes the covenant and the more legal material). Westermann reads the J frame etiologically — the narrative explains why, despite persistent human wickedness, the cosmic order is now stable: God has resolved, once and for all, not to respond to that wickedness with annihilation. On this literary reading the repetition of the *yetser* clause is deliberate, marking a shift in divine policy, not a logical slip.
Robert Alter presses the literary point into a reading of divine character: across the narrative God appears to learn that destruction does not cure the human condition and so adopts a different strategy of forbearance and covenant. The reading has real merit and is faithful to the narrative's contours. But it concedes precisely what later systematic theology would resist: the God of Genesis 8:21, like the God of 6:6 who "repented" (Hebrew *naham*) that he had made humankind, is a deity who changes his mind in response to experience. That collides with doctrines of divine immutability and exhaustive foreknowledge — if God knew the human heart would remain evil, the flood resolved nothing he did not already know, and the post-flood promise reads as a course correction.
The horns are therefore clear. Either God's policy toward human evil genuinely changed between chapter 6 and chapter 8 (which the J narrative seems to depict, at the cost of immutability), or the same source has juxtaposed two incompatible inferences from the identical premise. The Noah-sacrifice harmonization rescues the narrative flow but cannot erase the fact that the text itself names the evil heart, not the sacrifice, as the reason for restraint.
Where the critical reading lands: genuine contradiction in the stated divine reasoning, internal to the Yahwist source.
Sources for this reading
Claus Westermann, Genesis 1-11: A Continental Commentary (trans. John J. Scullion; Fortress, 1984) pp. 404-410, 452-460on the etiological J frame and the yetser clause
Hermann Gunkel, Genesis, trans. Mark Biddle (Mercer University Press, 1997) pp. 58-65, 78-82on source assignment within the flood narrative
Gordon J. Wenham, Genesis 1-15 (Word Biblical Commentary 1; Word Books, 1987) pp. 144-150, 187-191on the Noah-sacrifice reading of 8:20-22
Joel S. Baden, The Composition of the Pentateuch: Renewing the Documentary Hypothesis (Yale University Press, 2012) pp. 188-209on the J/P analysis of the flood account
Robert Alter, The Five Books of Moses: A Translation with Commentary (W. W. Norton, 2004) pp. 36-46on divine character development across the flood narrative
Kenneth A. Mathews, Genesis 1-11:26 (New American Commentary 1A; Broadman & Holman, 1996) pp. 339-345, 395-400on the mercy/new-covenant harmonization
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: Widely regarded as 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.
This is among the cleaner contradictions in the primeval history, because the same Hebrew clause anchors two opposite divine resolutions. In Genesis 6:5 the LORD sees that "every imagination (Hebrew *yetser*) of the thoughts of his heart was only evil continually" (*kol-yetser mahshevot libbo raq ra*), and in consequence resolves to wipe out humanity. In Genesis 8:21, after the flood, the LORD declares he will never again curse the ground or smite every living thing, and gives as his reason "for the imagination of man's heart is evil from his youth" (*ki yetser lev ha-adam ra mineurav*). The same evil *yetser* of the heart functions as the explicit grounds — the *ki*, "because" — for opposite decisions: destruction in chapter 6, forbearance in chapter 8.
The most common harmonization, run by Kenneth Mathews in the NAC and in modified form by Gordon Wenham, reads 8:21 as God's mercy responding to Noah's sacrifice (8:20-21 opens with the LORD smelling the "sweet savour"). On this account the post-flood promise is a new covenantal disposition; circumstances have changed, so the two passages address different moments and do not strictly contradict. This works as narrative sequence, but it does not dissolve the contradiction in the stated reasoning, because the text does not ground the restraint in the sacrifice. The causal clause is explicit and it is about the human heart: God withholds future destruction *because* man's inclination is evil from youth. The very datum that triggered judgment now triggers patience.
This is also one of the standard exhibits for source-critical analysis of the flood narrative. Hermann Gunkel, Claus Westermann, and more recently Joel Baden assign both Genesis 6:5-8 and Genesis 8:20-22 to J, the Yahwist, who frames the flood with these two heart-of-man oracles. That assignment matters: the contradiction is internal to a single source, not merely an artifact of the documentary interweaving (the P strand contributes the covenant and the more legal material). Westermann reads the J frame etiologically — the narrative explains why, despite persistent human wickedness, the cosmic order is now stable: God has resolved, once and for all, not to respond to that wickedness with annihilation. On this literary reading the repetition of the *yetser* clause is deliberate, marking a shift in divine policy, not a logical slip.
Robert Alter presses the literary point into a reading of divine character: across the narrative God appears to learn that destruction does not cure the human condition and so adopts a different strategy of forbearance and covenant. The reading has real merit and is faithful to the narrative's contours. But it concedes precisely what later systematic theology would resist: the God of Genesis 8:21, like the God of 6:6 who "repented" (Hebrew *naham*) that he had made humankind, is a deity who changes his mind in response to experience. That collides with doctrines of divine immutability and exhaustive foreknowledge — if God knew the human heart would remain evil, the flood resolved nothing he did not already know, and the post-flood promise reads as a course correction.
The horns are therefore clear. Either God's policy toward human evil genuinely changed between chapter 6 and chapter 8 (which the J narrative seems to depict, at the cost of immutability), or the same source has juxtaposed two incompatible inferences from the identical premise. The Noah-sacrifice harmonization rescues the narrative flow but cannot erase the fact that the text itself names the evil heart, not the sacrifice, as the reason for restraint.
Where the critical reading lands: genuine contradiction in the stated divine reasoning, internal to the Yahwist source.
Sources for this reading