After the initial chaos and retribution surrounding the Golden Calf, a shadow of unresolved guilt remained over the Israelites. The full measure of divine justice had yet to be delivered, revealing a complex web of shared responsibility between the nation and its leadership. A fatal blow ultimately struck the camp, bringing sudden and premature death to the remaining offenders [רש״ר הירש, ביאור יש״ר]. Commentators disagree on exactly when this took place. Some suggest God brought this retribution upon the sinners immediately [שטיינזלץ, רלב״ג]. Others propose that it was not a single event contained to one day, but rather a gradual punishment that afflicted the people over an extended period, possibly continuing even after they journeyed away from Mount Sinai [אבן עזרא, שד״ל, קאסוטו].
Unlike other instances of divine punishment, the exact number of people who perished in this plague is left unrecorded. This omission might be due to the gradual nature of the deaths, or simply because the Torah chose not to tally them. In sharp contrast, the number of individuals executed by the tribe of Levi was explicitly counted. That specific record was kept to honor the Levites, highlighting their courage and absolute devotion as they fearlessly struck down offenders out of deep trust in God [רמב״ן, הטור הארוך, שפתי כהן, ברכת אשר על התורה].
The primary approach among commentators is that this plague targeted a specific category of sinners: those who participated in idol worship in front of witnesses, but who had not received a formal warning beforehand. The division of justice was precise. Those who sinned with both witnesses and a warning were executed by the sword of the Levites. Those who sinned in secret, with no witnesses, were tested by drinking specially prepared water that caused their bellies to swell. This raises a question: if God knows all secrets, why would witnesses be required for a punishment delivered directly by Heaven? The answer is that when a person dies in a plague, onlookers might dismiss it as a natural tragedy. Because there were witnesses to their actions, the entire community knew clearly that these deaths were a direct consequence of their sin, not mere coincidence [גור אריה, דברי דוד]. Another perspective explains that the drinking of the water was reserved strictly for cases of doubt. Therefore, those who had witnesses against them could not be tested with the water and instead faced the plague [משכיל לדוד]. Additional opinions suggest the plague struck the mixed multitude who originally instigated the sin [מלבי״ם]. It may also have targeted those who did not actively worship the idol but celebrated, hugged, and kissed it [מיני תרגומא, נתינה לגר], or even those who only sinned in their thoughts [ביאור יש״ר].
Beyond the immediate victims of the plague, the narrative presents a striking paradox regarding who actually created the idol, attributing the making of the calf to the people while also stating that Aaron made it. This reflects a clear division of roles. Aaron performed the technical, physical labor of forming the gold, but it was the people who truly brought the idol into existence through their demands, their consent, and their wealth [ספורנו, שד״ל, ביאור יש״ר]. Furthermore, there was a profound clash of intentions. Aaron created the object intending it to serve merely as a technical medium to direct the people's needs toward God, but the Israelites warped it into an independent deity and an object of idol worship [העמק דבר].
Naming Aaron at the conclusion of this tragic episode serves a specific purpose. It emphasizes that the people received a severe punishment precisely because they caused a great and holy man to stumble. When the chosen leader formed the calf, even if done under extreme pressure or coercion, it resulted in a massive desecration of God's name, granting the sin a stamp of approval in the eyes of the celebrating masses. Ultimately, the Torah places the primary blame on the people for making the calf, clearing Aaron of direct responsibility for the idolatry itself, since his actions were entirely the result of their intense pressure and force [אור החיים, חתם סופר, שפתי כהן].