The dawn of the revelation at Mount Sinai unfolds as a cosmic drama, where the forces of nature react to the approaching Divine presence, preparing the Israelites for an unprecedented spiritual encounter. As morning breaks, a profound reversal of standard protocol occurs. God arrives at the mountain near sunrise, waiting for the Israelites to gather. Unlike the courts of human kings where subjects must wait for their ruler, God waits for His people [רש״י, חזקוני, אבן עזרא].
The mountain is enveloped in thunder, lightning, and a heavy cloud. The primary approach among commentators views this as a fierce, miraculous storm that erupted without any natural prior causes [אברבנאל, רבנו בחיי, תולדות יצחק]. The basic elements of nature shook in anticipation of the descending Divine presence [מלבי״ם]. Interestingly, the thunder is noted before the lightning, reversing the natural order. This reversal serves to separate the physical sounds of the storm from the spiritual blast of the horn that would immediately follow [רבנו בחיי]. Furthermore, the entire storm was contained exclusively upon the mountain itself, leaving the Israelite camp completely untouched [שד״ל].
Other scholars understand these events not as natural weather, but as manifestations of angels singing and emitting light, with the heavy cloud acting as a protective barrier to shield the Israelites from the overwhelming sight [רבנו חננאל, צאינה וראינה]. A more unique perspective suggests there was no physical thunder or lightning at all. Instead, it was the voice of God's speech adapting to human hearing, while the flashes of light were the actual letters of Divine speech visibly glowing in the air [הכתב והקבלה].
The climax of this sensory display is an incredibly loud blast of a horn. Commentators agree this was not a physical instrument being played, but rather a miraculous, mighty sound generated without any physical vessel [רלב״ג, אברבנאל], though some suggest it was a powerful wind howling through the mountain crevices [קאסוטו]. Unlike the fleeting claps of thunder and flashes of lightning, this sound continuously grew in volume. This steady increase symbolizes the contrast between limited human intellect and Divine prophecy; while human understanding has boundaries, the wisdom of the Torah is perfect and endlessly expanding [אברבנאל, כלי יקר]. The sound itself was entirely clear and pure, carrying within it the deep, expansive meanings of all the Torah's commandments [הכתב והקבלה].
Faced with the unnatural intensity of this sound, the people trembled [אבן עזרא]. Yet, while the entire universe shook around them, human beings were called to stand upright and listen to God's word [רש ר הירש]. This trembling was not born out of a physical fear of danger. Rather, it was a profound spiritual shock and awe meant to refine the people, stripping away their materialism to prepare them for prophecy. The process of shedding physical limitations is naturally accompanied by such trembling [הכתב והקבלה, העמק דבר]. This awe instilled a deep fear of heaven within them, serving as the very foundation of their faith [קונטרס חיבה יתירה]. Finally, some interpret this trembling not as fear, but as physical movement. Realizing that God was already waiting for them upon the mountain, the Israelites jolted awake and hurried from their beds to meet Him [חזקוני].