The prophet delivers a harsh rebuke by drawing a historical parallel to one of the darkest crises in the nation's past, exposing the deep roots of their spiritual and moral decay. The primary approach among commentators understands this as a direct reference to the tragic events of the Concubine at Gibeah. Even in those early days, the Israelites were entrenched in idolatry. Alongside the horrific acts of immorality and bloodshed, the idol of Micah stood prominently. The nation fell into a state of spiritual stagnation. They remained stuck in that sin, and the altars and idols established then survived to become the very foundation for the idolatry practiced by Jeroboam in later generations [רש״י, מצודת דוד, מלבי״ם, ביאור שטיינזלץ, רד״ק].
Alternatively, the comparison is not about a continuous timeline of sin, as it is unlikely the nation worshipped idols uninterrupted through the righteous eras of Samuel and David. Instead, the prophet highlights that the current generation has sinned far more severely than the offenders at Gibeah. If the people of the present day had been standing there during that ancient crisis, they would never have gone to war to wipe out the disgrace. Because they commit equally terrible acts themselves, they lack the moral standing to fight against the injustices of others [אבן עזרא, אברבנאל]. An earlier interpretation suggests Gibeah refers to the location where the people demanded a king and crowned Saul, marking the beginning of their rebellion against God. However, commentators note that this explanation aligns less smoothly with the straightforward meaning of the text [רש״י, רד״ק].
The failure of the battle to overtake the wicked at Gibeah offers two distinct lessons. Historically, because the people of that era tolerated Micah's idol without protest, they suffered initial defeats in their civil war against the tribe of Benjamin, who protected the guilty. Ultimately, that war failed to eliminate the underlying idolatry [רש״י, מצודת דוד, מלבי״ם]. On the other hand, the battle reflects the mindset of the current sinners. They deceive themselves into believing that the destructive war which finally caught up with the criminals of Gibeah will somehow spare them, despite their own profound wickedness [אבן עזרא, רד״ק, ביאור שטיינזלץ].
The wickedness of the tribe of Benjamin during the original crisis is characterized by deep injustice. Most sources view this description as a reference to the sheer wrongfulness of the men of Benjamin who committed or defended the atrocities [מצודת ציון, אבן עזרא, רד״ק, אברבנאל, ביאור שטיינזלץ]. Another perspective links their behavior to arrogance. The tribe of Benjamin acted with intense pride, elevating themselves above the rest of the nation and stubbornly refusing to listen to their brothers' demands to surrender the criminals [רש״י].