An essay, setting forth the divine original, sufficiency and perfection of the Holy Scriptures : Being the substance of several sermons, preached in the parish churches of South-Walsham St. Lawrence and St. Mary's, in the county of Norfolk. Offered and intended by way of preservative against the pious frauds and artful delusions of enthusiasts and impostors. By Henry Crownfield, B.D. formerly vice-president of Queen's College, Cambridge, and now rector of South-Walsham St. Lawrence, and Rockland St. Mary's and St. Margaret's, in the county of Norfolk.