Another very interesting feature is the presence of evil in heaven, the fallen angels in the second heaven, and hell in the third. The idea of evil in heaven may be a nod to the book of Job and the dialog between God and Satan, who was coming and going between heaven and earth. The idea of hell in the third heaven may have been derived from ideas expressed in the Old Testament book of Isaiah, which mentions that the sufferings of the wicked will be witnessed by the righteous in paradise.
