SATB and Organ or Two-Part Choir and Organ (both versions included). Wonderful setting from a voluntary by John Alcock (1715-1806). Can be done as a short anthem at communion or as a fraction anthem with a cantor. A version for Lent can be found here.
The disciples knew the Lord Jesus in the breaking of the bread.
The bread which we break is the communion of the body of Christ.
One body are we, for though we are many, we share one bread.