Lamb of God Lamb of God sung or recited during the fraction of the Host. It is said to have been introduced into the Mass by Pope Sergius I (687–701). "Agnus Dei" has been set to music by many composers, usually as part of a Mass setting. In Christian iconography, an Agnus Dei is a visual representation of Jesus as a lamb, since the Middle Ages, usually holding a standard or banner with a cross. This normally rests on the lamb's shoulder and is held in its right foreleg. Often the cross will have a white banner suspended from it charged with a
Fountain of São João (Melgaço) by a wider base and triangular pediment. Above the base are two Tuscan pilasters, that extend into the body, crowned by slender cone-type pinnacles. The triangular/gabled pediment is traced by the lines of the frieze and cornices, also surmounted by a pinnacle. The lower part of the backrest includes a spout, that extends from an anthropomorphic figure, with undulating hair, while the figure is flanked by two serpents, with heads of dragons. Surmounting these figures is a concave niche sheltering an Agnus Dei, with the inscription "ECCE AGNUS DEI", surrounded by phytomorphic elements extending vertically. The niche is flanked by