Gregory the Dialogist

But there came to him all his brethren, and all his sisters, and all that knew him before, and did eat bread with him in his house, and moved the head over him. 23. What is designated by the eating of bread but charity, and what by the moving of the head but admiration? But it is well subjoined, And comforted him over all the evil that the Lord had brought upon him. For to console the grief of one that had been smitten, is to rejoice with him on his pardon after he had been smitten. …

Morals on the Book of Job, Book XXXV ↗

Thomas Aquinas

The principal adversity of Job was being deserted by his friends, (19:13) and therefore he places the remedy for this adversity first when he says, "Then all his brothers and sisters and all who had known him before came to him," which indicates the remembrance of his past friendship, "and they ate bread with him in his house," which describes the return to the old familiarity, "and they shook their head over him," in compassion for his affliction. …

Commentary on Job ↗