Gregory the Dialogist

With righteousness was I clothed, and arrayed myself as with raiment. And my judgment a diadem. [HISTORICAL / MORAL INTERPRETATION] Surely, when we are clothed with a garment, we are surrounded on every side, and so he is 'clothed with righteousness as with a garment,' who defends himself on every side with good practice, and leaves no part of his conduct naked to sin; for he that is just in some deeds and unjust in others, it is as if he covered over this side, and exposed that one naked; nor are those henceforth good deeds, which …

Morals on the Book of Job, Book XIX ↗

Thomas Aquinas

But he did not have mercy in judgment in such wise as to forsake justice, and so he adds, "I have been clothed in justice," i.e. justice was apparent everywhere in my trials: For a piece of clothing surrounds a man on all sides. To show that he was not coerced to do justice, but did so freely, he then says, "and I have clothed myself," by my own will, putting on justice "like a garment" protecting and adorning me all over. …

Commentary on Job ↗