Shared ground
These verses present covenant penalties aimed at a specific kind of person: someone who hears the covenant terms yet persists in stubborn disloyalty (the setup in 29:18–19). The text’s explicit claims are strong and personal: Yahweh “will not pardon” that individual, Yahweh’s anger and jealousy are pictured as rising “like smoke” against him, and the already-recorded curses “written in this book” will come to rest on him.
The passage also makes the punishment feel public and permanent. “Blot out his name from under the sky” signals decisive removal from the people’s recognized standing and future. Verse 21 adds that Yahweh will single the person out from Israel’s tribes “for evil,” meaning for calamity, and it ties this directly to “the curses of the covenant” written in the law book.
Where interpretation differs (only where needed)
What “blot out his name” refers to. Some read it mainly as physical death. Others read it as covenant removal—loss of place among Israel—possibly through exile, death, or lasting disgrace. The text itself emphasizes removal and erasure, but does not specify the exact mechanism.
What “set him apart to evil” means. Many take “evil” here as disaster/calamity (harm that happens to him), not moral evil (harmful character Yahweh causes in him). Others worry the wording could imply Yahweh makes the person evil, but the verse’s grounding “according to the curses…written” points to covenant sanctions (judgments) rather than moral corruption.
How complete “all the curse written in this book” is. Some take “all” as covering the full range of covenant penalties as applicable—nothing is held back. Others hear it as emphatic speech: the curses truly arrive in force, without requiring that every listed curse happens in the same way or at the same time.
Why the disagreement exists
The Hebrew wording uses vivid covenant language and compressed phrases. “Name” can point to reputation, lineage, and continuing place in the community, not only the moment of death. Likewise, “evil” can mean calamity in many Old Testament contexts, but modern readers may first hear it as moral evil. Finally, “all the curse” can function either as a strict total or as an intensifier, and the text does not pause to explain how it cashes out.
What this passage clearly contributes
It clarifies that covenant membership is not treated as automatic protection when a person embraces deliberate defiance. The passage explicitly links judgment to written covenant terms (“this book”), stressing that the outcome is not random fate but covenant enforcement. It also shows that covenant consequences can focus on an individual in a way that marks them out from the wider tribal community, while still belonging to the larger warning about harms that threaten Israel as a whole (29:18–19).