דברי הימים ב, פרק כ״ח, פסוק י״א

An urgent and clear call rings out, demanding the immediate release of captives taken from among their own brothers. This plea carries a stern warning of severe divine consequences, insisting that every single captive must be returned home [ביאור שטיינזלץ].

The threat of God's anger looming over the people carries two complementary meanings. On one level, it serves as a preventative warning for the future: the captors must free their brothers immediately to stop God's anger from awakening and falling upon them [מצודת דוד]. At the same time, the warning reflects the current moral state of the captors themselves. Even if the captive brothers were guilty and deserving of punishment, the moral failure of those who took them is far worse. Consequently, God's anger is already directed at the captors to a significant degree. The very act of taking their own brothers captive will only multiply their guilt and intensify the punishment they will ultimately face [ביאור שטיינזלץ].