The consequences of spiritual betrayal and idolatry unfold as a profound loss of dignity. When a nation abandons its moral foundation, the resulting punishment takes the form of deep public humiliation, serving as a direct reflection of the people's own choices.
The imagery presented is that of an unfaithful woman whose secret betrayals are forcefully brought to light. As a consequence for her actions, her garments are turned bottom-up, with the lower edges lifted over her face to fully expose her shame to all onlookers [רש״י, מצודת דוד, ביאור שטיינזלץ]. By laying bare what was meant to remain covered, her disgrace becomes entirely public and visible to everyone [מצודת ציון, מצודת דוד].
On a deeper level, this physical uncovering represents the exposure of hidden sins. God takes the impurity that the people tried to conceal in secret and displays it openly. This public exposure reveals much more than just the sinful acts themselves; it brings to light the deep, underlying thoughts that drove these behaviors, as well as the open joy the people felt while committing them.
The tragedy of this situation only worsens over time. Even after being forced into exile, the people did not abandon their corrupt practices and continued to sin openly. This stubborn refusal to change leaves Jerusalem facing a painful and lingering question: when will the nation finally be ready to cleanse itself and become pure once again [מלבי״ם]?