Preface. 1. Inasmuch7 as certain men have set the truth aside, and bring in lying words and vain genealogies, which, as the apostle says,8 “minister questions rather than godly edifying which is in faith,” and by means of their craftily-constructed plausibilities draw away the minds of the inexperienced and take them captive, [I have felt constrained, my dear friend, to compose the following treatise in order to expose and counteract their machinations.] These men falsify the oracles of God, and prove themselves evil interpreters of the good word of revelation. They also overthrow the faith of many, by drawing them away, under a pretence of [superior] knowledge, from Him who founded and adorned the universe; as if, forsooth, they had something more excellent and sublime to reveal, than that God who created the heaven and the earth, and all things that are therein. By means of specious and plausible words, they cunningly allure the simple-minded to inquire into their system; but they nev- ertheless clumsily destroy them, while they initiate them into their blasphemous and impious opinions respecting the Demiurge;9 and these simple ones are unable, even in such a matter, to distinguish falsehood from truth. 2. Error, indeed, is never set forth in its naked deformity, lest, being thus exposed, it should at once be detected. But it is craftily decked out in an attractive dress, so as, by its outward form, to make it appear to the inexperienced (ridiculous as the expression may seem) more true than the truth itself. One10 far superior to me has well said, in reference to this point, “A clever imitation in glass casts contempt, as it were, on that precious jewel the emerald (which is most highly esteemed by some), unless it come under the eye of one 7 The Greek original of the work of Irenæus is from time to time recovered through the numerous quotations made from it by subsequent writers, especially by the author’s pupil Hippolytus, and by Epiphanius. The latter preserves (Hær. xxxi. secs. 9–32) the preface of Irenæus, and most of the first book. An important difference of reading occurs between the Latin and Greek in the very first word. The translator manifestly read ἐπεί, quatenus, while in Epiphanius we find ἐπί, against. The former is probably correct, and has been followed in our version. We have also supplied a clause, in order to avoid the extreme length of the sentence in the original, which runs on without any apodosis to the words ἀναγκαῖον ἡγησάμην, “I have judged it necessary.” 8 1 Tim. i. 4. The Latin has here genealogias infinitas, “endless genealogies,” as in textus receptus of New Testament. 9 As will be seen by and by, this fancied being was, in the Valentinian system, the creator of the material universe, but far inferior to the supreme ruler Bythus. 10 There are frequent references to Irenæus to some venerable men who had preceded him in the Church. It is supposed that Pothinus, whom he succeeded at Lyons, is generally meant; but the reference may sometimes be to Polycarp, with whom in early life he had been acquainted. [On this matter of quotations from anonymous authors of the apostolic times, not infrequently made by Irenæus, consult the important tractate of Dr. Routh, in his Reliquiæ Sacræ, vol. i. 45–68.] Preface. 842 Preface.