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
Mass for Four Voices the B flat strikingly changes to a B natural, producing an unexpected major chord at a key point in the music. A special feature of the mass (as also of the Five-Part Mass) is the final clause of the Agnus Dei. Although text-expression is not generally a feature of sixteenth-century Mass cycles, Byrd clearly regarded the ending of the Agnus Dei text ‘Agnus Dei, qui tollis peccata mundi, dona nobis pacem’ as an opportunity for an expressive treatment of the words. He almost certainly identified ‘nobis’ as the persecuted Tudor Catholic community, as he had done with many of the