Shared ground
These verses are a direct appeal to God (“My God”) to neutralize hostile forces. The language is intentionally pictorial: enemies are compared to light debris (tumbleweed/rolling dust and chaff) that cannot stand its ground, and God’s intervention is compared to fast, overwhelming natural power (wind, wildfire, storm). Explicitly, the psalm asks for scattering (“blown away”), then for pursuit and fear (“pursue… terrify”), not just a narrow military setback.
The imagery also assumes God’s rule over the created order: wind, fire, and storm are not random here but portrayed as instruments of God’s action. In context (Psalm 83’s coalition threat), the pictures communicate a hoped-for collapse of enemy coordination—loss of stability, speed, and morale.
Where interpretation differs
Some read the nature language as mainly metaphor for historical events (battle defeat, political dispersal, panic). Others allow that the prayer could include, or at least evoke, literal disasters as possible means of deliverance (e.g., wildfire or severe storm), even if the psalm itself does not narrate an actual disaster.
A related difference is how “pursue” is heard: either as traditional battle language (“chase them down”) or as being driven by uncontrollable forces (like wind and storm chasing them).
Why the disagreement exists
The metaphors are vivid but not pinned to one concrete outcome. “Like chaff” clearly signals weightlessness and scattering, yet the text does not specify whether that scattering happens through military defeat, social collapse, natural events, or some mix. Likewise, fire and storm can describe both literal phenomena and the felt experience of unstoppable threat.
What this passage clearly contributes
These verses contribute a strong portrayal of divine power as overwhelming, swift, and destabilizing to entrenched opposition: enemies become insubstantial (chaff), exposed (wind-driven), and unable to maintain resolve (terror under the storm). They also show that Psalm 83’s plea is not limited to winning a single engagement; it asks for a decisive undoing of hostile plans through God’s superior force, framed with creation imagery (wind/fire/storm).