Following the example of Christ, the Church has always used bread and wine with water to celebrate the Lord’s Supper. The words of the Savior, by which He instituted this sacrament, are the form of this sacrament; for the priest speaking in the person of Christ effects this sacrament. From these authoritative yet broad strokes we can develop more precisely the matter and form of the Eucharist. Aaron Sanders continues his series on the matter and form of the sacraments.