Christ in the House of Mary and Martha. The Last Supper. The Supper at Emmaus. Ulm, c.1520. Lime wood with old polychromy. These three groups depict scenes from the life of Christ in which he appears at a meal table. They would originally have formed part of the predella (lower zone) of a large carved altar. The three table scenes refer to the celebration of Mass, when bread and wine are presented at the altar as the body and blood of Christ.