A tragic cycle of sin, punishment, and ongoing rebellion defines the behavior of the nation. Rather than learning a lesson from the severe agricultural and economic hardships they face, the people choose to deepen their wrongdoing by withholding what rightfully belongs to God. They are suffering under a heavy curse, yet their response is to continue their defiance [מצודת ציון, מלבי״ם].
Commentators differ on the exact relationship between this agricultural curse and the nation's refusal to give their required tithes and offerings. The primary approach among commentators is that the curse is a direct punishment for holding back these contributions. God strikes the work of their hands, causing the land to stop yielding its crops. The tragedy lies in the absurdity of their actions. Even though keeping the tithes brings them no financial gain and only results in further ruin, they refuse to accept the moral lesson and continue to rob God [רש״י, מצודת דוד, מלבי״ם].
An alternative perspective suggests a different chain of events, where the curse of drought and failing crops is actually a punishment for the nation's earlier sins. The people react to this suffering with bitterness. They justify withholding their tithes by arguing that if God deprives them of rain and curses their harvest, they have no reason to offer Him a portion of the meager yield that remains [רד״ק, ביאור שטיינזלץ, צאינה וראינה].
What makes this situation particularly severe is the sheer scale of the wrongdoing. While other offenses might be committed by isolated groups within the society, the failure to provide tithes and offerings is a universal failure. Every single person is complicit, without exception. The sin has become the standard practice of the entire public, leaving not a single individual who properly sets aside what is owed to God [רד״ק, מצודת דוד, מלבי״ם, צאינה וראינה].