A man in Roman dress lies sprawled on the ground, his arms flung wide and his face turned upward in shock or awe. His orange cloak and green armor catch the strong light that falls from above, while his helmet lies beside him, half in shadow. A large horse dominates the upper half of the scene, its body angled diagonally and its head lowered, almost touching the fallen man.

The horse’s flank is rendered with broad, luminous brushstrokes, showing the play of light across its muscular form and the white patches on its coat. Behind the horse, an older man leans forward, holding the animal’s bridle and looking downward with a furrowed brow. The background is nearly black, pushing the figures forward and heightening the dramatic contrast between light and shadow.

Details like the straps on the man’s armor, the folds of his cloak, and the veins on his outstretched hands are painted with striking realism and immediacy. The composition is tightly focused, with the three figures filling almost the entire canvas and little space left for landscape or sky. The horse’s raised front hoof hovers just above the fallen man’s leg, casting a distinct shadow on his thigh and the ground below.

A sword in a black scabbard lies on the ground near the man’s left hip, its hilt and guard catching the light. The older man’s head and shoulders are partially obscured by darkness at the upper right, with only his face and hands illuminated. The lower left corner of the canvas is filled by the man’s orange cloak, which spills out in heavy, sharply folded fabric.

The wooden floorboards beneath the figures are visible in the slanting light, painted with rough, loose strokes and subtle brown tones. Caravaggio’s use of light and shadow, known as chiaroscuro, is especially evident here, emphasizing the physical and spiritual drama of the scene. The work is recognized as religious art and directly depicts Paul the Apostle at the transformative instant described in Christian scripture.