Shared ground
These two verses hold two ideas in tension. First, the speaker admits a hard-to-explain fact: a person can do wrong repeatedly and still “live long.” That is an observation about how life can look when justice is delayed.
Second, the speaker states a confident conclusion about outcomes: things will be “better” for people who fear God, and it will “not be well” for the wicked. The difference is framed in relational-moral terms (“reverent before him” versus “doesn’t fear God”), not in terms of skill, intelligence, or social power.
Where interpretation differs
A main question is what “better” and “not well” refer to. Some read the speaker as pointing mainly to how life tends to go even within this world: over time, reverence leads to greater stability and wellbeing, while wickedness finally unravels. Others think the speaker is reaching beyond what can be measured in daily experience: even if the wicked seem to prosper for a long time, there is an ultimate moral outcome in which reverence proves to be the truly “better” path.
A second question is how v. 12 (“lives long”) fits with v. 13 (“neither shall he lengthen days”). Some take v. 13 as correcting appearances: the wicked may look long-lived, but their life is not truly “extended” in any meaningful, secure way. Others take it as a general principle with admitted exceptions already stated in v. 12.
Why the disagreement exists
The passage itself sets up the puzzle: it asserts both (1) observed delay (“lives long”) and (2) a firm contrast in outcomes (“better…not well,” “like a shadow”). Because Ecclesiastes often describes what people see “on the ground,” readers differ on whether these lines are mainly about normal patterns in this life, or about a deeper outcome that is not always visible.
What this passage clearly contributes
Explicitly, the text insists that repeated wrongdoing can coexist with long life, so quick visible consequences are not guaranteed. It also explicitly claims a moral distinction in outcomes: “better” is tied to fearing God (), and “not well” is tied to refusing that reverence. The image “like a shadow” reinforces that the wicked person’s apparent success is fragile, fading, or lacking lasting weight, even when it seems prolonged.