Augustine of Hippo
The inhabitants of the desert were worthy of criticism, not due to their desire for fleshly sustenance, but because they complained to the Lord as they yearned for food.
In the mean time there arose a murmuring of the people against the Lord, as it were repining at their fatigue. And when the Lord heard it he was angry. And the fire of the Lord being kindled against them, devoured them that were at the uttermost part of the camp.
וַיְהִ֤י הָעָם֙ כְּמִתְאֹ֣נְנִ֔ים רַ֖ע בְּאָזְנֵ֣י יְהוָ֑ה וַיִּשְׁמַ֤ע יְהוָה֙ וַיִּ֣חַר אַפּ֔וֹ וַתִּבְעַר־בָּם֙ אֵ֣שׁ יְהוָ֔ה וַתֹּ֖אכַל בִּקְצֵ֥ה הַֽמַּחֲנֶֽה׃
3 Church Fathers comment on this verse
The inhabitants of the desert were worthy of criticism, not due to their desire for fleshly sustenance, but because they complained to the Lord as they yearned for food.
They absorbed blasphemy from the Egyptians and desired sinful pleasures from the foreigners who were in their midst.
What was the cause of the people's complaints (Num. 11:1)? They were distressed by the difficulties of their journey. Why does God swiftly punish those who sin (Num. 11:1)? The law had just been established; thus, punishing those who transgress it was necessary for the enlightenment of others. Fear is inherent in the subordinate. However, punishment was coupled with mercy. Those who repented found favor. When the fire from the Lord consumed some of the assembly (Num. 11:1), everyone gathered to pray; the lawgiver interceded for forgiveness, which the compassionate God granted. The necessity behind the punishments is evident from what followed.
Shortly after the punishment ceased, they reminisced about Egypt, longing for the garlic, onions, and other delicacies, igniting their insatiable desire for these items. The writer, after noting their ingratitude, appropriately highlighted God's generosity by mentioning the manna, which served not only as bread but also as nourishment. He states: "They shall grind in millstones, and grind in stones, and boil in pots, and make ... consumption" (Num. 11:8). Despite the Israelites' grievances, the Lord's anger flared, and the Prophet became upset, exclaiming, "Why hast Thou embittered Thy servant ..., to burden me with this people? Did I conceive all these people, or give birth to them? For Thou sayest to me, Take them into thy bosom, as a nurse carries her child, to the land which Thou didst swear unto their fathers" (Num. 11:11-12). This statement highlighted their immaturity, as He compared them to an infant, focused only on nursing. Given the great displeasure expressed in these words, the Sovereign God instructed Moses to lead the people not through human power, but through divine grace. “Gather unto me seventy elders of Israel, whom you recognize as leaders; bring them to the tent of meeting, and they shall stand before you. I will come down and speak with you there; I will take some of the Spirit that is upon you and place it upon them, so that they may share the burden of the people with you, and you will not carry it alone" (Numbers 11:16-17). Through these words, the lawgiver realized he had received ample grace for his role. When God stated that He would take away some of the Spirit from Moses, it was not to diminish His power or grace, but to show that the grace already given was sufficient for present needs. The empowerment given to the seventy did not lessen Moses' grace; the evidence lies in his consistent ability to lead and perform miracles as before. Just as one lamp can illuminate thousands without losing its brightness, so too did God bestow grace upon the seventy without detracting from Moses. This principle continues today; for instance, many thousands baptized by a single priest receive the divine gift without diminishing his grace, just as numerous individuals ordained by a bishop maintain the original priest's gift. Yet, the Lord allows His servant to exercise discernment, saying, “Select those whom you deem fit."
Passages read together with this verse.