דברי הימים ב, פרק כ״ג, פסוק כ״א

A successful political revolution brings more than just a change in leadership; it restores a sense of rightful order and national relief. The recent upheaval concluded with a complete return to stability. The people of the land experienced profound joy as the rightful king took his place, successfully returning the crown to the House of David. Although the new monarch was only a young child, he was not left to rule alone. Jehoiada the priest, the very man who had saved the boy's life, stepped in to serve as his guardian and guide [ביאור שטיינזלץ].

Following these events, a deep rest settled over the city [מצודת ציון]. It remained completely calm and free from the threat of further warfare. This lasting peace was directly secured through the execution of Athaliah. With her removed, there was no one left to stir up unrest or ignite a new conflict, allowing the kingdom to move forward in quiet security [מצודת דוד].