After pleading for mercy based on God's love for the Israelites, Moses presents another crucial argument to save the nation: preventing the desecration of God's reputation in the eyes of the world. The entire purpose of the Exodus from Egypt was to educate the surrounding nations, particularly the Egyptians, to recognize a Creator who operates with justice, love, and divine providence. Wiping out the Israelites in the wilderness would completely overturn this goal, instead reinforcing the twisted worldview of the Egyptians [רשב״ם, רש״ר הירש, קאסוטו]. Furthermore, the Egyptians would not merely keep these theories to themselves; they would actively broadcast and spread these claims everywhere [אור החיים].
If the Israelites were destroyed, the Egyptians would inevitably claim that God's intentions were sinister from the very beginning. The primary approach among commentators is that the Egyptians would accuse God of orchestrating a massive deception, leading the people into the desert solely to slaughter them [ביאור יש״ר, שטיינזלץ, רש״ר הירש, קאסוטו]. Such a narrative would paint God as a cruel enemy and expose His promises as fraudulent. This would severely damage the belief in one God and empower idolaters, who would argue that God ultimately turns on His own devoted followers [אור החיים].
Other perspectives suggest the Egyptians would interpret the destruction through the lens of their own pagan beliefs. Some propose they would view the event through astrology, claiming the Israelites left Egypt under an inescapable alignment of bad luck. According to this view, when God realized He could not overcome this negative fate, He chose to kill the Israelites Himself to save His own honor [אבן עזרא]. Alternatively, because the Egyptians believed in separate deities governing good and evil, they might conclude that the God of the Exodus was simply a destructive force. They would argue that He struck Egypt purely out of malice and then unleashed that same uncontrollable rage upon His own people, destroying them so thoroughly that they were not even left with a place for burial [מלבי״ם].
The specific fear that the Egyptians would say God killed the Israelites in the mountains carries a deeper irony. It suggests that Mount Sinai, the exact location where the Torah was given, would be transformed into their mass grave [ריב״א].
Facing this catastrophic fallout, Moses begs God to turn away from His anger and reconsider the disaster intended for His people. The request for God to relent does not imply ordinary human regret, as the Torah simply uses human terms to express divine concepts. Rather, it is a plea for a shift in divine will, asking God to transition from thoughts of strict punishment to thoughts of kindness and mercy [רש״י, הכתב והקבלה, מזרחי, גור אריה, ברכת אשר]. Moses appeals to God to entirely cancel the harsh decree He had considered bringing upon the nation [רש״י, ביאור יש״ר, אוהב גר, נתינה לגר]. This exchange also features a subtle, intentional parallel. Earlier, God had told Moses to let Him be so He could destroy the nation. Moses responds using a closely related concept, asking God to let go of His plan for destruction and change His mind [קאסוטו].