Steven C. Warner of the Notre Dame Folk Choir has written this lovely song in Voices as One Vol 2, which is suitable for Lent and Funerals.
The sheet music is at WLP and the lyrics are in their sample.
My worry with their material is that an assembly is going to be hard pressed to sound anywhere as good as the original. Nevermind – sing along with my backing and see how you go. I couldn’t fit all Warner’s chords in to BIAB but it doesn’t seem to to be an issue.