יחזקאל, פרק ט׳, פסוק ד׳

As the impending destruction draws near, God initiates a preemptive rescue mission to distinguish the righteous from the wicked. He instructs an angel to pass directly through the heart of the city of Jerusalem. The deliberate repetition of passing through the city and through Jerusalem serves not only to clarify the location [מצודת דוד], but to emphasize the deep tragedy of the moment. This is the chosen place where God originally placed His presence, yet the overwhelming sins of the residents have ultimately driven Him away [רד״ק].

To secure the safety of the innocent, the angel is told to draw a specific mark on their foreheads [רש״י, מצודת ציון, מלבי״ם]. This mark acts as a protective shield and a clear warning to the angels of destruction to leave these individuals unharmed [רש״י, מלבי״ם]. The act closely mirrors the placing of blood on the doorposts during the exodus from Egypt, though here the event unfolds entirely within a prophetic vision [רד״ק]. The mark itself is drawn using ink [רד״ק, ביאור שטיינזלץ].

According to the tradition of the sages, the designated sign is the Hebrew letter Tav. It is marked in ink upon the righteous and in blood upon the wicked. Commentators offer different perspectives on the meaning behind this specific letter. One approach suggests it serves as an abbreviation, standing for the word "live" for the righteous and "die" for the wicked. Alternatively, the letter Tav is viewed as a stark reminder that the protective merit of the ancestors has finally been exhausted [רד״ק].

This protective mark is reserved exclusively for those who are deeply pained, crying out, and suffering helplessly as they witness the corruption and abominations consuming their home [מצודת דוד, רד״ק, ביאור שטיינזלץ]. The emotional toll on these individuals is described in two distinct ways, painting a layered picture of their anguish. Some are defined by their sighing, representing a deep grief over the general evil and the moral collapse of the nation. Others are characterized by their groaning, which points to a more intense, personal suffering. These individuals face direct persecution and distress simply because they refuse to join in or accept the actions of the wicked [מלבי״ם].