Shared ground
The passage presents Noah’s first recorded act on dry land as worship: he builds an altar to and offers burnt offerings from animals and birds described as “clean” (explicit in v. 20). The story then links that offering with Yahweh’s response: the offering is portrayed as accepted (“sweet savor”), and Yahweh forms an internal resolve about how he will deal with the world going forward (explicit in v. 21).
Yahweh’s resolve has two main parts. First, he will not “again curse the ground” on account of humanity in the way just experienced, and he will not again wipe out all living creatures as he has done (explicit in v. 21). Second, as long as the earth remains, the regular rhythms that make ordinary life possible—seedtime/harvest, temperature changes, seasons, and day/night—will not cease (explicit in v. 22).
Where interpretation differs
1) What “clean” means here. Some read “clean” as an early, limited category known to Noah (suitable for sacrifice), even before later detailed rules appear. Others think the narrator is using later, familiar language to describe earlier events, without implying Noah had the later system.
2) What “curse the ground” covers. Some take it as a promise never to bring another earth-wide judgment like the flood. Others read it more narrowly: God will not repeat this particular kind of ground-wide curse and total sweep of life, but lesser judgments and disasters are still possible.
3) How the stated reason works (“human hearts…evil from youth”). Some hear the logic as mercy: God commits to stability despite ongoing human moral failure. Others hear it as realism: since human inner tendencies remain the same, a repeat of total destruction would not solve the underlying issue, so God chooses a different way of governing the world.
Why the disagreement exists
The wording is broad (“not again…as I have done”) yet also tied to specific expressions (“curse the ground,” “while the earth remains”). The passage also presents God’s reasoning in compact form, which leaves room for readers to weigh whether the emphasis is on compassion, on realism about humanity, or both.
What this passage clearly contributes
It shows worship and divine response as the transition from survival to a renewed, ordered world. It grounds future human history in God’s decision to preserve stability in creation, not because humans have become morally reliable, but in full awareness of persistent human bent toward harm (v. 21–22). It also sets up the coming covenant language by first stating God’s resolve and the dependable continuance of ordinary time and seasons (v. 22; see also Genesis 9:8–17).