Augustine of Hippo
The wrath and indignation of the Lord God should not be understood as an emotional response, but rather as a force through which He carries out ultimate judgment, as all creation submits to and serves Him. We ought to reflect on the words found in the book of the Wisdom of Solomon: But having power, Thou judgest with leniency, and governest us with great mercy (Prem 12:18). Thus, the anger of God manifests in the soul that recognizes His law when it witnesses a transgressor disregarding that law. This emotion often brings about retribution within the hearts of the righteous. Furthermore, the anger of God can be perceived as a clouded mind that envelops those who violate His commandments.
To clarify how He would communicate with them, He declared that He would provoke them; His wrath signifies His profound displeasure. However, the anger and intense displeasure of the Lord God should not be interpreted as mere emotional outrage; rather, it represents the power through which He justly exacts retribution, placing all of creation under His dominion. It is important to recall what is expressed in the Wisdom of Solomon: “But Thou, Lord of power, judgest with calmness, and orders us with great favour.” (Prem. 12:18) Thus, the wrath of God is described as the turmoil experienced by a soul that understands God's law, particularly when witnessing that same law being violated by a sinner. This righteous anger leads to much being avenged. The wrath of God can also be seen as the mental darkness that overtakes those who violate His commandments.