משלי, פרק ה׳, פסוק י״א

A life spent chasing fleeting worldly desires instead of seeking wisdom and moral growth ultimately leads to profound sadness and physical pain. At the end of a person's life, whether in old age or on the very day of death, this deep heartache bursts forth as a bitter cry or groan of complaint [רלב״ג, מצודת דוד]. This agonizing realization arrives just as the human body wastes away and loses its natural strength. The primary approach among commentators is that the descriptions of the body's decay refer generally to the physical form. Yet, a more specific view notes a progression of loss, distinguishing between the fading of the body's general fat and the withering of the basic, essential flesh that remains clinging to the bones even in a frail state [מלבי״ם].

A sharp contrast exists between the years of youth and the final stages of life. During youth, a person is often consumed by burning desires and remains blind to the emptiness of their actions. However, in their final days, when physical strength runs out and material pleasures no longer hold any appeal, they wake up to a bitter reality [עמנואל הרומי, אמרי דעת]. The deep cry of regret comes from the crushing realization that they wasted their years on empty pursuits instead of building wisdom and faith. Standing before judgment and on the edge of losing their eternal life, they understand that they have secured neither a good reputation in this world nor a share in the world to come [מלבי״ם, אמרי דעת, עמנואל הרומי].

This stark reality also serves as a strong warning against delaying repentance. A person might put off returning to God until the later stages of life, assuming there will always be time to change course. However, repentance that occurs only when the body is broken and entirely lacks the physical energy to sin is incomplete. It is simply not valued in the same way as choosing the right path during youth, a time when a person still possessed the strength and opportunity to do wrong but actively chose to do good [אלשיך].