Gregory the Dialogist

My flesh is clothed with worms and clods of dust: my skin is dried up and shrunken. But we shall make out these words more exactly and more applicably, if we go back to the order of the foregoing interpretation. For by sleep the torpor of inaction, and by rising the exercising of action, is represented. And hence this same cause of these pains is brought in immediately afterwards, when it is said, My flesh is clothed with corruption and foulness of dust. …

Morals on the Book of Job, Book VIII ↗

Thomas Aquinas

Blessed Job had demonstrated above that the consolation in which Eliphaz offered the promise of happiness in this earthly existence was unfitting. He first demonstrated this from the general condition of the life of man on the earth. Now he intends to demonstrate that the same consolation is unfitting considering his own individual condition. He proposes two things which preclude his hoping for prosperity on earth. The first is the weakness of the body which he was suffering. …

Commentary on Job ↗