A striking aspect of the Christian art of the third century is the absence of the imagery that will dominate later Christian art. We do not find in this early period images of the Nativity, Crucifixion, or Resurrection of Christ, for example. This absence of direct images of the life of Christ is best explained by the status of Christianity as a mystery religion. The story of the Crucifixion and Resurrection would be part of the secrets of the cult.
While not directly representing these central Christian images, the theme of death and resurrection was represented through a series of images, many of which were derived from the Old Testament that echoed the themes. For example, the story of Jonah—being swallowed by a great fish and then after spending three days and three nights in the belly of the beast is vomited out on dry ground—was seen by early Christians as an anticipation or prefiguration of the story of Christ’s own death and resurrection. Images of Jonah, along with those of Daniel in the Lion’s Den, the Three Hebrews in the Firey Furnace, Moses Striking the Rock, among others, are widely popular in the Christian art of the third century, both in paintings and on sarcophagi.
All of these can be seen to allegorically allude to the principal narratives of the life of Christ. The common subject of salvation echoes the major emphasis in the mystery religions on personal salvation. The appearance of these subjects frequently adjacent to each other in the catacombs and sarcophagi can be read as a visual litany: save me Lord as you have saved Jonah from the belly of the great fish, save me Lord as you have saved the Hebrews in the desert, save me Lord as you have saved Daniel in the Lion’s den, etc.