The Mass of Saint Gregory the Great

The Mass of Saint Gregory, painted by Adriaen Isenbrandt around 1550 and now at the J. Paul Getty Museum in Los Angeles, depicts one of the most theologically significant Eucharistic visions in medieval Christianity: Pope Gregory the Great, celebrating Mass, witnesses the arma Christi (instruments of the Passion) and the Man of Sorrows appearing above the altar, confirming the Real Presence of Christ in the Eucharist. This vision, which medieval tradition located in the church of Santa Croce in Gerusalemme in Rome, became a central image in Catholic devotional culture precisely because it visualized the theological claim that the Mass was a re-presentation of Christ's sacrifice. Adriaen Isenbrandt, the Bruges-based painter who worked in the tradition of Gerard David, produced works of refined technical quality that served the devotional needs of the prosperous merchant families and ecclesiastical foundations of the southern Low Countries. The Getty's acquisition reflects the museum's systematic effort to build a representative collection of Flemish panel painting.

Isenbrandt's technique follows the Bruges workshop tradition closely: chalk ground over panel, precise underdrawing, transparent glazes over opaque underlayers, and the characteristic cold, clear light that distinguishes Bruges painting from the warmer tonality of Antwerp. The altar setting with its liturgical objects — chalice, corporal, missal — is rendered with the documentary precision of a master comfortable with both devotional subject and material culture.