Gregory the Dialogist

Ver. 23. When he has stirred himself to seek bread, he knoweth that the day of darkness is ready in his hand. For 'bread' is the wages of the present life, and 'the day of darkness' is taken for the time of vengeance. And so in the course of his conduct, the wicked man at times weighs well the present wrath of the Judge Above, but he is not diverted from wickedness, so that it too should be itself diverted from his destruction. …

Morals on the Book of Job, Book XII ↗

Thomas Aquinas

Now although a tyrant fears all strangers, he still can sometimes confide in the members of his family or his household with whom he lives securely. But when his evil is beyond all measure, he fears even the members of his own household with whom he lives and so the text continues, "When he goes to look for bread, he knows that the day of darkness is at hand," i.e. the day of death. …

Commentary on Job ↗