Early Christian art used symbolic and allegorical images mainly, partly no doubt to avoid drawing attention during the persecution of early Christians in the Roman Empire. In the Catacombs of Rome Jesus was represented indirectly by pictogram symbols such as the Ichthys ("fish"), peacock, Lamb of God, or an anchor (the Labarum or "Chi-Rho" was a later development). Later, personified symbols were used, including Jonah, whose three days in the belly of the whale pre-figured the interval between Christ's death and Resurrection, Daniel in the lion's den, or Orpheus charming the animals.