Christ Is Our Guiding Light was composed by Rev. Eric Law of the Kaleidoscope Institute and works well as a canon or round in 2, 3 or 4 parts. There is also a lovely descant line for a cantor to sing once the group is confident. It could be used as a candle lighting song, for the Passing of Peace, and even in protests and marches. 

"Christ is our guiding light:
Come, let us walk in the way of peace."