Against Heresies
...that until the discovery of the Library of Nag Hammadi in 1945, the 2nd century CE work Against Heresies was the best surviving description of Gnosticism?
...that until the discovery of the <a class="mw-redirect" href="./Library_of_Nag_Hammadi" id="mwEwE" rel="mw:WikiLink" title="Library of Nag Hammadi">Library of Nag Hammadi</a> in 1945, the 2nd century CE work <i id="mwEwI"><b id="mwEwM"><a class="mw-redirect" href="./On_the_Detection_and_Overthrow_of_the_So-Called_Gnosis" id="mwEwQ" rel="mw:WikiLink" title="On the Detection and Overthrow of the So-Called Gnosis">Against Heresies</a></b></i> was the best surviving description of <a href="./Gnosticism" id="mwEwU" rel="mw:WikiLink" title="Gnosticism">Gnosticism</a>?