Gregory the Great
They will be like dust driven by the wind and like ashes swept away by the storm (Job 21:18). When a wicked person finds himself in a position of power, feeling entirely free to commit acts of oppression and violence, in his flawed perception, he believes he is rooted firmly in this world. However, when the judgment of the righteous Judge falls upon all the wicked, they become like ashes before the wind. If I may express it this way, they are suddenly lifted away in a fierce wave of wrath and cast into the flames. Those whom tears of sorrow could not move due to their rash judgments appear as burdensome weights. In the hands of the Judge are those light matters that were burdensome to their neighbors because of their wrongdoing, reduced to ashes in the face of the storm.
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Before the gaze of the Almighty, the existence of the wicked resembles mere ashes; while it may seem to flourish for a fleeting moment, it is ultimately destroyed by His judgment, diverted to eternal fire. The ashes are scattered by the storm, for the Lord is coming, and His arrival will not be silent. A consuming fire goes before Him, and a great tempest surrounds Him (Psalms 49:3). In the turbulence of this storm, the wicked are removed from the presence of the Eternal Judge. Those who set their hearts on evil desires here on earth become as "dust" and "ashes," for they are seized by the storm and carried off to eternal punishment.