SATB and Piano or Organ. This is a lovely little gem - simple and as graceful as the Shaker text.
Your choir and congregation will love this! And if you like this one, be sure to look at Consecration (also by Frederick Chatfield.)
I will bow and be humble, yea, bow like the willow tree.
I will bow, this is the token, I will wear the easy yoke,
I will bow and be broken, yea, I'll fall upon the rock.