Pisanello, The Vision of St. Eustace
Tempera on wood, 55 x 65 cm
National Gallery, London
Dressed in the finery to be expected of a 15th-century knight, the 2nd-century soldier encounters a deer with a crucifix between its antlers. This encounter will lead him to Christianity and thence to a martyr's death.
The pagan life that Eustace will abandon may be suggested by his luxurious clothing and gear. The hare chased by a dog in the lower right is probably another indication of the life he will abandon. Hares were thought to represent persons who were inconstant and "double-minded."
Read more about images of images of St. Eustace.
Read more about hare symbolism.
Source: this page at Wikimedia Commons.