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
Missa L'homme armé (Palestrina) fimus mass gave new life to work. In the Sanctus, the tenor sings the L'homme armé melody beginning on F; on the jubilant text "Hosanna," the note values are diminished such that the structural function is hidden. Agnus Dei I continues to rise to the climax which is pitched 'G'. Agnus Dei II begins as if the cantus firmus is present on "A," but proceeds to a freely composed trio. Agnus Dei III places the now-familiar tune in extremely long notes sung by the highest voice. Beginning on "A", an indication instructing the soprano to "sing without ceasing" is present,