Shutters When closed, the triptych shutters showed externally a
grisaille painting, depicting the
Mass of Saint Gregory in a single scene: it features
Gregory the Great kneeling at an altar in front of Christ. The latter is surrounded by an arch with flying angels. The two characters in color are a later addition, and are the painting's donors. The frame contains scenes of the Life of Jesus: from the lower left, the
Prayer in the Garden,
The Arrest,
Christ in Front of Pilatus, the
Flagellation, the
Coronation of Thorns, the
Via Crucis and, finally, the
Crucifixion. In the sky around the cross are a flying angel and a devil, with a red halo around his head, who is drawing
Judas Iscariot's soul away. Judas is also visible hanging at the mountain's right edge, while a man is pointing at him.
Side panels The left panel depicts St. Peter and one donor, identified as Peeter Scheyfve by the presence of his coat of arms, with the motto "Een voer al" ("One for all"). In the background, a man sits on a basket under a makeshift roofing: he is likely St. Joseph who heats Jesus' diapers (nappies). In the right panel is St. Agnes and the eponymous donor, Agnes de Gramme, also accompanied by her coat of arms. In the background, a bear and a wolf attack some people.
Central panel The central panel shows the
Adoration of the Magi, depicted in accordance with traditional Early Netherlandish iconography. A monumental Mary sits outside a precarious hut, with the Child held at her womb.
Melchior, the eldest of the Magi, is kneeling at her feet, with his gift before him: a sculpture of gold with the Sacrifice of Isaac, a forecast of Jesus' Passion. Below the object are several toads, symbols of heresy. Melchior's crown lies on the ground, an allusion to the powerlessness of earthly power against the celestial.
Caspar stands to the rear, with a depiction of the Visit of Queen Sheba to Solomon on his mantle. He brings frankincense on a vessel. Finally, the last of the Magi, the dark-skinned
Balthazar, has white garments decorated by an embroidery resembling thorny leaves: brings a spherical
pix whose reliefs depict the Offer of Water to King David, and which contains
myrrh. Balthasar is accompanied by a dark-skinned servant. An unusual element is represented by the partially naked figure at the hut's entrance, surrounded by other grotesque ones and characterized by a red mantle, a
tiara with metallic twigs in the hand, and by a wheal at the left ankle, protected by a glass structure. This has been variously interpreted as either another prefiguration of the Passion, or as a symbol of the heresy looming the followers, or as the Judaic messiah which, after having been struck by leper, has become the
Antichrist. Other figures include the shepherds crawling the hut, a traditional element in Italian contemporary Adorations of the Magi; the armies running in the far background and the quasi-anthropomorphic constructions. ==Painting materials==