My setting of this sacred text is contemplation on Christ’s sacrifice as demonstrated through the Eucharist. Like Barber’s Agnus Dei, this work began life in another medium. Much of the music is derived from a solo marimba piece. When writing the chorale sections for the marimba piece, I wrote them as if writing for human voices, and always had in mind I would use the music for a choral work. I felt that this text really matched the sentiment in the music. This work is influenced by Messiaen’s setting of the same text, and Górecki’s Totus Tuus.