The disease begins with the rising of tubercular boils, and at length resembles a cancer spreading itself over the whole body, by which the body is so affected, that some of the limbs fall completely away. Scraping with a potsherd will not only relieve the intolerable itching of the skin, but also remove the matter. Sitting among ashes is on account of the deep sorrow (comp. Jon 3:6) into which Job is brought by his heavy losses, especially the loss of his children. The lxx adds that he sat on a dunghill outside the city: the dunghill is taken from the passage Psa 113:7, and the ”outside the city” from the law of the מצרע. In addition to the four losses, a fifth temptation, in the form of a disease incurable in the eye of man, is now come upon Job: a natural disease, but brought on by Satan, permitted, and therefore decreed, by God. Satan does not appear again throughout the whole book. Evil has not only a personal existence in the invisible world, but also its agents and instruments in this; and by these it is henceforth manifested.
