דברים, פרק ד׳, פסוק י״ב

The revelation at Mount Sinai was defined by a profound sensory paradox. The Israelites experienced a powerful manifestation of God emerging from the fire, yet they saw no visual representation of Him. This absence of a physical form is not merely a historical detail, but a fundamental theological principle meant to uproot any thought of God possessing a physical body, serving as the basis for the prohibition against creating idols [רלב״ג, ביאור שטיינזלץ]. The divine speech radiated directly from the flames, an element that represents God's attribute of strict justice [רקנאטי, שפתי כהן]. This event was far more than an internal spiritual awakening; it was an actual, physical sensory perception of sound [רש״ר הירש].

Exactly what the Israelites heard during this awe-inspiring moment is a matter of profound discussion. One perspective suggests that the people only heard the precise articulation of letters and words during the first two Commandments. For the rest of the revelation, they absorbed only the raw power and volume of the sound, without distinguishing specific words [העמק דבר, חתם סופר]. Another tradition explains that every divine utterance transformed into an angel. Because the people were overwhelmed and could not endure God's direct presence after the first two Commandments, they heard the remaining laws spoken through these angels [אור החיים]. From another viewpoint, the purely auditory nature of the experience serves as a simple clarification: the divine communication was absorbed entirely through the ears, contrasting sharply with the complete absence of any figure within the fire [ביאור יש״ר].

The nature of this experience raises a fascinating question about whether a voice can physically be seen. The most straightforward understanding is that sound is invisible, and the historical account simply emphasizes that no physical form was present, only a voice [אבן עזרא]. This repetition is necessary to dispel the logical, yet mistaken, assumption that a voice must be produced by a physical body [תולדות יצחק]. However, another approach suggests that the people actually experienced a visual, sensory manifestation of the sound [ברכת אשר]. According to this thought, the flames formed tangible, glowing shapes of holy letters in the air. The only form the people witnessed was not God, but the letters themselves, which are the very essence of the voice [הכתב והקבלה, העמק דבר]. Similarly, it is suggested that the Israelites visibly saw the angels created by the divine speech, making it necessary to warn them against mistaking these visible messengers for God Himself [אור החיים].

Ultimately, this unique encounter with the fire and the direct voice of God established the covenant of the Ten Commandments. It also served a vital, enduring purpose: permanently confirming Moses' status as the faithful prophet, uniquely chosen to receive and transmit the rest of the Commandments to the nation [רמב״ן].