So Satan went out from the presence of the LORD and infected Job with terrible boils from the soles of his feet to the crown of his head.
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
And he took him a potsherd to scrape himself withal,.... His mouth was shut, his lips were silent, not one murmuring and repining word came from him, amidst all this anguish and misery he must be in; much less anything that looked like cursing God and blaspheming him, as some are said to do, because of their pains and their sores, Rev 16:11; but Job...
sore boils--malignant boils; rather, as it is singular in the Hebrew, a "burning sore." Job was covered with one universal inflammation. The use of the potsherd [Job 2:8] agrees with this view. It was that form of leprosy called black (to distinguish it from the white), or elephantiasis, because the feet swell like those of the elephant.