Cain (1880) by the French painter Fernand-Anne Piestre Cormon (1845-1924).
Cormon depicted Cain and his family fleeing through a desert. There are desperate people in a desperate situation. The strong long shadows have the effect that the whole clan is haunted by the light, meaning the wrath of God.
But despite the biblical subject the painting is above all an anthropologic study. It shows how the artist imagined prehistoric people. So Cain’s folk look more like a horde of Neanderthal or Cro-Magnon, which had been discovered not long before the painting was done.