In the Westminster Confession, the Larger and Shorter Catechisms, a section with the definition of a sacrament precedes the sections interpreting Baptism and the Lord's Supper (W.C.F., Chap. 27; L.C., Qq. 161, 162, 163; S.C., Q.q. 91, 92). In considering these it is important to remember that the authors of these statements were not interested in propounding a sacramental theory of religion for its own sake. They were confronted with an existing sacramental system and practice which appeared to them as idolatry and superstition. What we find then in our standards is not academic discussion but polemical and critical reaction to an existing situation with a view to cleansing the worship of God from error and corruption. The starting point in Scripture and the institution of Christ ensured that the essential points were brought into prominence. Nevertheless it is legitimate to inquire whether some of the elements and emphases in the teaching have not been influenced and affected by the historical situation, the general outlook and atmosphere and the modes of thought of that time.