Gregory the Dialogist

Hell is naked before Him, and destruction hath no covering. Which same Paul likewise saith, But all things are naked and opened unto His eyes. But by the title of 'hell' and 'perdition' he denoted the devil and all the associates of his condemnation; but Who that One is before whom 'hell is naked,' he goes on with telling.

Morals on the Book of Job, Book XVII ↗

Thomas Aquinas

One should not believe that divine providence extends only to judging men in this life, and not after death, as the friends of Job seemed to think. To disprove this he then says, "Hell is naked before him," as if to say: The things which happen in hell are clearly seen by him and happen according to his judgment. To explain this he then says, "and there is no hiding place for perdition," so that those who have perished in hell can be hidden from the eyes of God as they are hidden from our eyes.

Commentary on Job ↗