Material success can often project an illusion of permanence. For those who act wickedly, their physical achievements and wealth may appear solid and secure on the surface, but in reality, they are fragile, temporary, and destined to collapse. This vulnerability is illustrated through two vivid comparisons drawn from the natural and agricultural worlds.
The first comparison likens the estate of a wicked person to the dwelling of a moth or worm [מצודת ציון, רמב״ן]. The primary approach among commentators understands this to mean a highly unstable structure that simply cannot endure. Some explain this as a small hole dug by a worm, which quickly caves in and fails to last [רש״י]. Others note that it refers to the delicate, thin cocoon a moth spins for itself. The moment the moth emerges, the wind easily carries the empty shell away [מלבי״ם, ביאור שטיינזלץ]. In the same way, the household and wealth built by a wicked person will be easily destroyed [מצודת דוד]. They offer no real protection or lasting stability, especially after death, when everything he built will waste away [רמב״ן, מלבי״ם]. Taking a different approach, some suggest the comparison is not about an insect at all, but rather describes any structure that is intentionally made to stand only temporarily [אבן עזרא]. Another perspective focuses on the destructive nature of the moth. Just as a moth feeds on the garments of others, a wicked person builds his home and sustains his lifestyle by exploiting people and consuming their property [אלשיך].
The second image reinforces this theme of impermanence by comparing the wicked person's assets to a temporary booth built by a watchman [מצודת ציון, ביאור שטיינזלץ]. Typically, a guard stationed in a vineyard or fig orchard constructs a simple hut to sit in during the harvest [רש״י, מצודת דוד]. This booth is designed from the start to last only a short time. As soon as the grape harvest concludes, the structure is abandoned, left desolate, and quickly ruined [מלבי״ם, ביאור שטיינזלץ]. While most view this as a basic agricultural hut, another interpretation suggests it is more like a temporary defensive wall built to protect a person during the night [אבן עזרא]. A completely different conceptual approach compares the watchman's booth to the luxurious clothing worn by the wicked. A guard builds a booth in a vineyard to create an intimidating presence, making intruders fear the unseen guard inside. Similarly, a wicked person wraps himself in expensive, impressive garments to strike fear into anyone who sees him, demanding respect for the person inside what is ultimately nothing more than an empty, external shell [אלשיך].