A life of wrongdoing breeds an inescapable sense of paranoia and instability. Even when the surrounding world appears perfectly calm, the mind of a wicked individual remains a battleground of anxiety. The primary approach among commentators views this inner turmoil as a deep psychological distress. The person constantly imagines threatening sounds, convinced that pursuers are hunting him down to take his life [מלבי״ם, ביאור שטיינזלץ]. This dread takes various forms. It can manifest as a haunting internal voice declaring that the time for his punishment has finally arrived [רש״י], or as a heavy awareness of the inevitable disaster destined to strike [מצודת דוד]. Others suggest this paralyzing terror specifically takes hold toward the end of his life [אבן עזרא].
The tragedy of this existence creates a sharp contrast between outward calm and inward chaos, particularly during times of peace. There are two main ways to understand this dynamic. The first highlights the psychological torment. Even when the rest of the world is at peace and people are relaxed, the wicked person lives with an agitated heart. He is consumed by the fear that robbers are eyeing his wealth and will soon come to steal it [אלשיך, מלבי״ם].
The second approach focuses on the sudden nature of the punishment compared to a false sense of security. Precisely when the individual is entirely at ease and feels safe, destruction and ruin descend upon him without warning [רש״י, מצודת דוד]. Occasionally, he might actually believe his own illusion of safety, convinced he will never fall to his enemies. Yet this confidence is merely a fleeting fantasy. In reality, he should be trembling, for disaster is destined to strike him completely unannounced [רמב״ן, תקות אנוש].