And he took a piece of broken pottery with which to scrape himself while he sat in the ashes.
The devil, having got leave to tear and worry poor Job, presently fell to work with him, as a tormentor first and then as a tempter. His own children he tempts first, and draws them to sin, and afterwards torments, when thereby he has brought them to ruin; but this child of God he tormented with an affliction, and then tempted to make a bad use of his affliction.
Commenting on Job 2:7-10
Then said his wife to him,.... The Jews (g), who affect to know everything, say, that Job's wife was Dinah, the daughter of Jacob, as the Targum, but this is not very likely; however, we may observe that polygamy had not obtained in these early times; Job had but one wife, and very probably she is the same that after all this bore him ten...
a potsherd--not a piece of a broken earthen vessel, but an instrument made for scratching (the root of the Hebrew word is "scratch"); the sore was too disgusting to touch. "To sit in the ashes" marks the deepest mourning (Jon 3:6); also humility, as if the mourner were nothing but dust and ashes; so Abraham (Gen 18:27).