ישעיהו, פרק ו׳, פסוק ו׳

The heavenly vision takes a sharp turn as a frightening encounter becomes a moment of profound purification. To prepare the terrified prophet for his divine mission, one of the angels flies directly toward him. This figure is identified as Michael, the heavenly defender of Israel, who is uniquely appointed to deliver prophecy [מלבי״ם].

In his hand, the angel holds a glowing coal, or perhaps a white-hot stone used for cooking [רש״י, מצודות, שד״ל]. Beyond its physical heat, this burning object carries deep symbolic weight. The primary approach among commentators understands the coal as a metaphor for divine speech and prophecy itself, which is now being transferred directly into the prophet's mouth [מלבי״ם, אברבנאל]. Alternatively, the searing heat represents the intense anger and fiery passion the prophet will need to properly rebuke the people [אהבת יהונתן].

However, the burning coal also serves as a harsh physical reprimand. It acts as a punishing blow to the prophet's mouth because he had previously spoken poorly of the Israelites, calling them a people of unclean lips. God does not tolerate slander against His children, and even the greatest prophets face severe consequences for doing so. This concept is so central that tradition suggests Isaiah ultimately met his death by being sawed through the very mouth that spoke those harsh words [רש״י, אברבנאל, צאינה וראינה].

The angel does not hold the coal directly, but grasps it with a pair of tongs. This raises a natural question: why would a heavenly being made entirely of fire need a tool to hold a hot coal? Some suggest this is simply a description tailored to human understanding [ראב״ע]. Others explain that the divine word is so exalted and intensely searing that even an angel of fire could be burned by it [מלבי״ם]. Conversely, the tool might have been used to protect the human prophet from being consumed by the angel's direct touch [רד״ק]. Another perspective uses this detail to highlight the spiritual superiority of the righteous over angels. While the heavenly being required tongs to avoid being burned, the glowing coal was placed directly on the righteous prophet's lips without harming him at all [צאינה וראינה]. On a symbolic level, the act of grasping the coal hints at the teachings of the Torah and the Temple service, both of which the Israelites had abandoned [אהבת יהונתן].

The coal itself is taken directly from the altar in the Temple courtyard [רש״י, שטיינזלץ]. Lifting the fire from this specific location emphasizes its absolute purity and holiness [ראב״ע]. Because the altar is the ultimate site of atonement, the coal carries a dual purpose. Just as the altar is approached with deep reverence, the searing touch of the holy coal strikes the prophet to punish his misstep, while simultaneously cleansing, purifying, and atoning for his sins. Through this painful but purifying fire, he is finally made ready to receive and deliver the word of God [מלבי״ם, אברבנאל].