A national return to God reaches its highest potential when driven by genuine joy rather than mere obligation. When the people swore their loyalty to God, they did so with deep inner happiness and absolute honesty. This profound joy proved that their commitment was entirely voluntary. They were not acting out of compulsion or simply going through the motions to satisfy a royal decree. A forced oath would have resulted in underlying sadness and a disconnect between their words and their true feelings [מצודת דוד, מלבי״ם].
Instead, their wholehearted embrace transformed the experience. Performing a commandment with such happiness, complete devotion, and willingness is viewed as a significant, additional commandment in its own right, one that is highly pleasing to God [חומת אנך]. Seeking God with this eager spirit demonstrates an understanding of the essential goodness of the act itself. The people were not driven by external motives, such as the hope for a reward or the fear of punishment [מלבי״ם].
Because their intentions were so pure and complete, God responded and made Himself fully present for them [ביאור שטיינזלץ, מצודת דוד]. On a deeper level, this divine response functioned like an unexpected discovery. Although the nation's past mistakes had generated accusers in the heavenly court, their current joyful dedication tipped the spiritual scales. This sincere joy awakened God's mercy and silenced any prosecuting voices, allowing His presence to be revealed to them like a sudden, found treasure [חומת אנך]. As a direct result of this merciful response, God granted the nation complete rest and tranquility on all sides [חומת אנך].