Chapter I.—Introductory. [“The Epistles of the New Testament have all a particular reference to the condition and usages of the Christian world at the time they were written. Therefore as they cannot be thoroughly understood, unless that condition and those usages are known and attended to, so futher, though they be known, yet if they be discontinued or changed … references to such circumstances, now ceased or altered, cannot, at this time, be urged in that manner and with that force which they were to the primitive Christians.” This quotation from one of Bishop Butler’s Ethical Sermons has many bearings on the study of our author; but the sermon itself, with its sequel, On Human Nature, may well be read in connection with the Stromata. See Butler, Ethical Discourses, p. 77. Philadelphia, 1855.]