A radiant figure of Christ, draped in a vivid red robe, stands at the left, his bare torso and raised arm illuminated by a glowing halo that sets him apart from the shadowy background. He extends his right hand forward, placing a large, heavy key into the hands of an elderly man with a white beard and balding head, who bends toward him in a gesture of humility and awe. This kneeling figure, clothed in a golden-yellow cloak, is Saint Peter, who clasps the key with both hands, his expression intent and reverent as he receives this symbol of authority.

Behind Peter, four other men cluster closely, their faces partially obscured by shadow, each watching the exchange with expressions ranging from curiosity to devotion. The figures are arranged in a tight semicircle, their bodies overlapping, drawing attention to the central act of Christ bestowing the keys, while the dark background creates a dramatic contrast with the luminous flesh and drapery. Rubens uses strong, directional light to model the forms, highlighting the muscular contours of Christ’s body and the textured folds of the garments, especially the rich red and ochre fabrics.

The brushwork is fluid and energetic, with visible strokes in the hair, beard, and robes, giving the scene a sense of immediacy and vitality. Small details, such as the metallic gleam of the keys and the subtle variations in skin tones, reveal the artist’s attention to naturalistic effects. The composition is anchored by the diagonal formed by Christ’s outstretched arm and Peter’s bowed figure, guiding the viewer’s gaze directly to the moment of transfer. The subject, known as the Keys of Heaven, depicts the biblical moment when Christ entrusts Saint Peter with the keys, a symbol of spiritual authority.