A profound picture of absolute helplessness emerges when the very terrain and forces of nature combine to guarantee the downfall of the wicked. This imagery serves as a metaphor for enemies who find themselves trapped in troubles from which there is absolutely no escape.
The primary approach among commentators presents a deadly combination of environmental hazards. The fleeing enemies are engulfed in a heavy, thick darkness—not merely the absence of light, but a gloom so dense it can almost be physically felt [אבן עזרא]. Beneath their feet, the ground is exceptionally slick and unstable, causing anyone who steps on it to easily stumble [מצודת ציון, המאירי]. The extreme and intense slickness of this terrain is highly emphasized [אבן עזרא]. Together, these factors create a fatal trap: the darkness prevents them from seeing and avoiding dangers, while the slippery ground causes them to slip and fall without anything to hold onto for support [רש״י, מצודת דוד, ביאור שטיינזלץ].
A third and decisive element seals their fate: an angel of God is actively chasing them. Ordinarily, someone navigating a dark, slick path might survive by moving slowly and with great caution. However, when pursued by a divine messenger, they are forced to run in panic and haste, which ensures their inevitable fall [רד״ק]. Overwhelmed by the terror of the chase and blinded by the dark, they lose all sense of direction, completely eliminating any chance of escape [אבן עזרא].
Beyond the physical depiction of a panicked flight, there is a deeper psychological and spiritual meaning. The darkness symbolizes the absolute lack of success the wicked experience on their corrupt path. Yet, instead of changing course, they stubbornly cling to the slippery ground—representing their refusal to abandon their false beliefs or feel shame for their actions. Because of this arrogance, their total disregard for God's guidance, and their insult to His honor, the angel does not just lightly push them. Instead, the angel relentlessly pursues them, striking them with ongoing troubles and deep fears [אלשיך].