This is a song for Reconciliation written by Rosamond E. Herklots and set to DETROIT by William Bradshaw. I have blogged the CWB II version where it was set to BELMONT.
It will require care not to descend into “dum te dum te dum te dum etc”, territory.
The text is here. The music is PD and available here. The version in Gather 3rd ed. is harmonised by Gerald H. Knight and copyright to the Royal School of Music. This problem has been fixed by GIA who now have their own arrangement for sale arranged by Paul J. Monichino. See how easy it is.
I looked for an acapella version in parts, which would be best for this, to no avail on You Tube, but found quite a variety of styles nonetheless. My backing is an old one I used for “O Dearest Lord, Your Sacred Head”. Chris at LiturgyShare, puts has the melody notes to read and a backing for learning purposes, which is more than I do, so he gets first clip.