Shared ground
These lines reuse a vivid picture from earlier in the psalm: hostile people are like dogs that reappear each evening, make noise, and roam the city looking for something to consume (compare Psalm 59:6). The repeated “evening” return signals persistence rather than a one-time threat.
The dog imagery highlights restless aggression and neediness. They are active, loud, and mobile (“go around the city”), but also hungry and unsatisfied. In the poem’s logic, that ongoing hunger exposes limits: they keep searching because they have not obtained what they want.
Where interpretation differs
One question is whether “let them return” is the speaker’s request (almost like permission to keep prowling) or simply a description of what they in fact do night after night.
Another question is what “food” stands for. Some readers take it as literal plunder or victims (what the attackers hope to gain). Others hear it more generally as a metaphor for any outcome they crave—control, harm, advantage—without specifying a single target.
Why the disagreement exists
The Hebrew wording can be heard either as a wish or as a prediction, and the immediate context is poetic rather than a report. Also, the psalm uses concrete city-at-night details (dogs, evening, roaming) to convey a broader reality (ongoing hostility), so interpreters differ on how tightly each detail maps to a specific real-world referent.
What this passage clearly contributes
Explicitly, it portrays enemies as repeatedly returning at night, noisy like dogs, moving around the city, searching for “food,” and staying active when not satisfied. The theological inference the poem pushes toward is that the threat is real and persistent, yet also marked by desperation and frustration rather than secure strength. Their continued roaming functions as a sign that their aims are not fulfilled.