Against Heresies (Irenaeus)

P. Oxyrhynchus 405 – fragment of *Against Heresies* from c. 200 AD

Against Heresies (Ancient Greek: Ἔλεγχος καὶ ἀνατροπὴ τῆς ψευδωνύμου γνώσεως, Elenchos kai anatropē tēs pseudōnymou gnōseōs, "On the Detection and Overthrow of the So-Called Gnosis"), sometimes referred to by its Latin title Adversus Haereses, is a work of Christian theology written in Greek about the year 180 by Irenaeus, the bishop of Lugdunum (now Lyon in France).^[1]^[2]^[3]^[4]^[5]

In it, Irenaeus identifies and describes several schools of Gnosticism, as well as other schools of Christian thought, and contrasts their beliefs with orthodox Christianity.^[6]

Until the discovery of the Library of Nag Hammadi in 1945, Against Heresies was the best surviving contemporary description of Gnosticism. Today, the treatise remains historically important as one of the first unambiguous attestations of the canonical gospel texts and some of the Pauline epistles. Irenaeus cites from most of the New Testament canon, as well as the noncanonical works 1 Clement and The Shepherd of Hermas; however, he makes no references to Philemon, 2 Peter, 3 John or Jude – four of the shortest epistles.^[7]

Only fragments of the original text in ancient Greek remain today, but many complete copies in Latin, the dates of writing of which remain unknown, still survive. Books IV and V exist in their entirety in a literal version in Armenian.

^ Also called On the Detection and Overthrow of Knowledge Falsely So Called e.g. Peter Drilling Premodern faith in a postmodern culture 2006 p 73 "But eventually The Detection and Overthrow of Knowledge Falsely So-Called (the actual title of what is commonly known as Against Heresies) expanded from two volumes to five."
^ Robert Lee Williams Bishop lists 2005 p 123 "Irenaeus recorded the bishops of the Roman church in the third of his five books entitled Detection and Overthrow of Knowledge Falsely So-Called" (Greek: Ἔλεγχος καὶ ἀνατροπὴ τῆς ψευδωνύμου γνώσεως, lit. "Elenchus and Overturning of the Pseudonymous Knowledge"), commonly called Against Heresies (Latin: Adversus haereses, Greek: Κατὰ αἱρέσεων).
^ The final phrase "of knowledge falsely so-called" (Greek: tes pseudonymou gnoseos genitive case; or nominative case pseudonymos gnosis)."Greek Word Study Tool | irregular nom f. sg". perseus.tufts.edu. Retrieved 30 March 2016.
^ Unger, Dominic J., Dillon, John J., St. Irenaeus of Lyons Against the heresies, Vol.1, p.3, 1992 "the final phrase of the title "knowledge falsely so-called" is found in 1 Timothy 6:20”.
^ Due to its reference to Eleutherus as the current bishop of Rome, the work is usually dated c. 180. Schaff, Philip (2001) [c. 1885] "Introductory Note to Irenæus Against Heresies", Ante-Nicene Fathers, Volume I, Against Heresies, William B. Eerdmans Publishing Company.
^ Only fragments of the original Greek text exist, but a complete copy exists in a wooden Latin translation, made shortly after its publication in Greek, and Books IV and V are also present in a literal Armenian translation.Poncelet, Albert (1910). "St. Irenaeus". Catholic Encyclopedia. New York City: Robert Appleton Company. Retrieved 4 March 2009.
^ Davis, Glenn (2008). "Irenaeus of Lyons". The Development of the Canon of the New Testament. Retrieved 4 March 2009.

[1] Also called On the Detection and Overthrow of Knowledge Falsely So Called e.g. Peter Drilling Premodern faith in a postmodern culture 2006 p 73 "But eventually The Detection and Overthrow of Knowledge Falsely So-Called (the actual title of what is commonly known as Against Heresies) expanded from two volumes to five."

[2] Robert Lee Williams Bishop lists 2005 p 123 "Irenaeus recorded the bishops of the Roman church in the third of his five books entitled Detection and Overthrow of Knowledge Falsely So-Called" (Greek: Ἔλεγχος καὶ ἀνατροπὴ τῆς ψευδωνύμου γνώσεως, lit. "Elenchus and Overturning of the Pseudonymous Knowledge"), commonly called Against Heresies (Latin: Adversus haereses, Greek: Κατὰ αἱρέσεων).

[3] The final phrase "of knowledge falsely so-called" (Greek: tes pseudonymou gnoseos genitive case; or nominative case pseudonymos gnosis)."Greek Word Study Tool | irregular nom f. sg". perseus.tufts.edu. Retrieved 30 March 2016.

[4] Unger, Dominic J., Dillon, John J., St. Irenaeus of Lyons Against the heresies, Vol.1, p.3, 1992 "the final phrase of the title "knowledge falsely so-called" is found in 1 Timothy 6:20”.

[5] Due to its reference to Eleutherus as the current bishop of Rome, the work is usually dated c. 180. Schaff, Philip (2001) [c. 1885] "Introductory Note to Irenæus Against Heresies", Ante-Nicene Fathers, Volume I, Against Heresies, William B. Eerdmans Publishing Company.

[6] Only fragments of the original Greek text exist, but a complete copy exists in a wooden Latin translation, made shortly after its publication in Greek, and Books IV and V are also present in a literal Armenian translation.Poncelet, Albert (1910). "St. Irenaeus". Catholic Encyclopedia. New York City: Robert Appleton Company. Retrieved 4 March 2009.

[7] Davis, Glenn (2008). "Irenaeus of Lyons". The Development of the Canon of the New Testament. Retrieved 4 March 2009.

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