איוב, פרק ל״ז, פסוק א׳

Observing the immense power of nature and the hidden ways in which God guides the world creates a profound emotional and physical shock. Fear and wonder merge into a deep anxiety that echoes intensely through the human body. At the center of this physical reaction is the heart. The primary approach among commentators describes a sharp, sudden movement in the chest. Some explain that the heart beats so violently it feels as though it is leaping out of the body [רש״י, מצודת ציון, ביאור שטיינזלץ]. Others describe a feeling of the heart being entirely uprooted and displaced by sheer terror [רלב״ג, מלבי״ם]. This violent pounding serves as the ultimate physical expression of absolute bewilderment and shock [רש״י].

The most common explanation ties this intense trembling to the overwhelming forces of nature, particularly thunder and rain. The human heart naturally shudders at the roaring sound of thunder [רמב״ן, ביאור שטיינזלץ]. This deafening noise is a wonder in itself, born from hot vapors colliding within clouds and fierce winds creating friction that births fire and lightning [תקות אנוש]. This reality leads to a powerful realization: if thunder—which is merely a routine natural occurrence and incredibly weak compared to God's true might—can spark such deep terror, a person should certainly tremble before His supernatural wonders [מלבי״ם]. Even the falling of rain, which might seem like a small, everyday event, is packed with miracles that fill the heart with awe and fear [מצודת דוד]. In truth, simply discussing how God watches over this physical world is enough to make the heart pound with dread, even before witnessing a direct revelation or hearing His voice [אלשיך].

Alongside the focus on the forces of nature, an alternative tradition shifts this intense anxiety toward the mysteries of God's justice. In this view, the overwhelming shock is a reaction to the sudden death of Aaron's sons, Nadab and Abihu. The heart is deeply shaken by the human inability to comprehend how God runs the world. It is terrifying to consider how deeply righteous men could enter the Tabernacle and be consumed by fire, while a wicked man like Titus could later enter the Holy of Holies and leave completely unharmed. This specific anxiety stems from the stark realization that humanity cannot grasp God's secrets or question His judgments [חומת אנך, אלשיך]. Even with the understanding that the death of righteous people serves to atone for the world and ultimately brings the rain that sustains human life, the harsh, incomprehensible nature of such a decree is enough to make the heart violently leap from its place [חומת אנך].