This is a very pretty song for Eucharist by Ed Bolduc.
It looks complicated when you look at the sheet music but is makes more sense when sung and it is at least feasible for an assembly to tackle.
The sheet music can be purchased for close to nothing at WLP and the text is hidden in their preview there. They also have a snippet to listen to there as well.
I couldn’t quite get the slow 6/8 time working on BIAB.
This is a gorgeous solo piano version that gives you a better idea of the feel: