Immediately following a dramatic divine punishment, the Israelite camp remains in deep turmoil. Rather than cementing their faith in the chosen leadership, the overwhelming display of miracles sparks a fresh wave of outrage against Moses and Aaron, who are now blamed for a tragic loss of life. The outcry erupts on the very next day, specifically mourning the two hundred and fifty chieftains who were consumed by fire [אבן עזרא, ביאור יש״ר, ביאור שטיינזלץ]. The people do not protest the fate of the rebellion's primary leaders, as the earth swallowing them provides undeniable proof of their guilt. However, the burning of the chieftains is viewed entirely differently. When the Israelites see the fire pans of these men repurposed into a sacred covering for the altar, they conclude that the victims were truly righteous and highly regarded by God [העמק דבר, שפתי כהן]. Calling them the people of God, the community clings to the original claim that the entire congregation is holy, erasing any inherent difference between the tribe of Levi and the rest of the nation [ביאור יש״ר]. The accusations hurled at Moses and Aaron represent the collective sentiment of the camp rather than a literal, unified shout, reflecting the belief that the mere instruction to take up the fire pans is what caused the tragedy [אור החיים].
The core of the people's grievance is a direct accusation of murder. The primary approach among commentators is that Moses and Aaron are suspected of setting a deliberate fire trap. Because an unauthorized incense offering is a known lethal hazard, previously proven by the deaths of Aaron's own sons, challenging the chieftains to an incense test is seen as knowingly sending them to their deaths. To the people, the resulting fire does not prove the men are unfit for the priesthood, only that unauthorized incense is inherently deadly [רמב״ן, רשב״ם, בכור שור, דעת זקנים, הדר זקנים].
Beyond the trap itself, the people argue that the method of the test is fundamentally flawed. Had Moses tested only the ringleader, his subsequent punishment would have deterred the others and spared their lives [אור החיים]. Furthermore, a fair trial would have involved standard animal sacrifices, which multiple priests can offer simultaneously, rather than an incense ritual strictly reserved for a single individual [ספורנו]. Another perspective highlights a clash in expectations of leadership. The Israelites view the rebellion as a mere personal insult to Moses and Aaron. They believe their leaders should have simply forgiven the affront, sparing the lives of so many prominent family heads instead of demanding such severe divine retribution [רש״ר הירש, נחל קדומים, ביאור שטיינזלץ]. A few even harbor the dark suspicion that the deadly fire does not originate from God at all, but rather that Moses and Aaron employ prayer, sorcery, or hidden wisdom to eliminate their rivals [אבן עזרא, שפתי כהן].
A deeper motive for the nation's grief lies in the identity of the fallen chieftains, who are understood to be the firstborn sons of their respective families. While the Israelites have come to accept Aaron's unique role as High Priest, they fiercely oppose the broader transfer of sacred duties from the nation's firstborns to the tribe of Levi. They envision a Tabernacle where the firstborn of every tribe maintains a secondary role in the holy service, ensuring the entire nation shares in the sacred work. The lingering fury stems from the belief that Moses, rather than allowing the firstborns to serve in a capacity similar to the Levites, forces them into a priestly incense test that ensures their destruction, ultimately securing a monopoly over the holy work for his own tribe [רמב״ן, רבנו בחיי, תולדות יצחק, חזקוני, צאינה וראינה].