Shared ground
Job 20:29 is Zophar’s closing summary: everything he has described about the wicked person’s downfall is that person’s “portion” and “heritage” (an assigned share). The verse is explicit that this outcome is from God and appointed by God. In other words, Zophar frames the end of the wicked person as a settled allocation, not random luck.
This line also clearly belongs to the debate setting of Job. It reports what Zophar claims about how God runs the world, not a narrator’s explanation of the whole book.
Where interpretation differs
Some readers take “portion/heritage” to mean mainly the wicked person’s suffering and collapse in this life (loss, reversal, shame). Others read it more broadly as the wicked person’s whole end—including death and whatever follows—without the verse spelling out details.
A second difference is how to read “from God.” Some understand Zophar to mean God directly sends the calamity as punishment. Others think the wording can also fit God assigning or allowing the outcome within his rule over events, without describing the mechanism.
Why the disagreement exists
The verse is short and summarizing. “Portion” and “heritage” are flexible metaphors for “what someone ends up with,” and Zophar does not specify whether he means a particular kind of disaster, the timing (immediate vs. eventual), or how directly God acts. The surrounding speech emphasizes swift reversal, but the concluding line itself stays general.
What this passage clearly contributes
This verse contributes a focused claim: Zophar sees a moral order in which the wicked person’s final share is fixed and God-assigned. It reinforces the book’s debate tension—Zophar speaks with certainty about predictable outcomes, while Job’s situation raises the question of whether this confidence matches reality (compare Job 21:7).