How do we know that God is displeased with murmuring?

In the narrative found in Numbers 11, God's reaction to the murmuring of the Israelites serves as a clear demonstration of His displeasure with this behavior. He sends a fire among the people, consuming those at the outskirts of the camp. This immediate and fierce response highlights the seriousness of their complaints against God's provision. The passage illustrates that murmuring is not merely a trivial matter but a significant affront to God's sovereignty and grace, demonstrating a lack of faith in His goodness. The continual pattern of complaining despite receiving blessings from God indicates a severe misunderstanding of His character and provision, which earns divine rebuke.