Lamb of God modern Roman Catholic Christology, Karl Rahner has continued to elaborate on the analogy that the blood of the Lamb of God, and the water flowing from the side of Christ on Calvary, had a cleansing nature, similar to baptismal water. In this analogy, the blood of the Lamb washed away the sins of humanity in a new baptism, redeeming it from the fall of Adam. In the Mass of the Roman Rite and also in the Eucharist of the Anglican Communion, the Lutheran Church, and the Western Rite of the Orthodox Church the "Agnus Dei" is the invocation to the
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