Deep physical suffering rarely remains confined to the body. When severe illness takes hold, it often pierces the core of a person's existence, awakening a profound existential dread. The primary approach among commentators is that this intense panic stems from the soul's deep fear of approaching death. Although the soul is bound to the physical body, its anxiety is actually far greater and stronger than the physical pain itself, which is why the sheer intensity of this dread is so heavily emphasized [אבן עזרא]. This terror extends to the highest spiritual facets of a person [מלבי״ם]. Beyond the natural fear of dying, a profound spiritual anxiety takes hold. The soul is terrified at the thought of being cut off from the world before it can fulfill its purpose and repair its flaws. For King David, this manifested as a fear of dying before he could rectify the sin of the first man, a spiritual repair intended to bring God's name to perfection in the world [אלשיך].
Conversely, this sheer terror can be viewed from a different perspective. The overwhelming panic serves as proof that the suffering has already achieved its intended purpose. The individual has been shaken to the core and has fully absorbed the moral lesson that the hardship was meant to teach [מצודת דוד]. Out of this overwhelming anxiety arises a desperate plea for healing. It is a cry of exhaustion, asking God how much longer He will watch this suffering, leave the sufferer in confusion, and allow the illness to crush him without bringing a cure. The soul cries out because it simply has no strength left to endure the pain [אבן עזרא].
This desperate request for an end to the agony rests on two complementary arguments. First, since the sufferer has already been terrified into learning the required moral lesson, there is no longer any justification to continue the punishment [מצודת דוד]. Second, the plea appeals directly to the honor of God. Delaying the healing prevents the individual from completing his required spiritual work in the world, a mission that is ultimately meant to bring God's name to a state of absolute perfection [אלשיך].