Until the 1945 discovery of the [[Nag hammadi|Nag Hammadi]] texts near [[Luxor]] in [[Egypt]], the only evidence about the existence of Gnostic groups came from anti-Gnostic [[church fathers]]<ref name="Carson"/> who occasionally quoted large fragments of Gnostic writings or sometimes whole works in their writings attacking and refuting the Gnostic [[heresy]] in defence of their [[Christian]] faith.<ref name="Skarsaune"/><ref name="Smith">{{cite book
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Until the 1945 discovery of the [[Nag hammadi|Nag Hammadi]] texts near [[Luxor]] in [[Egypt]], the only evidence about the existence of Gnostic groups and sects came from anti-Gnostic [[church fathers]]<ref name="Carson"/> who occasionally quoted large fragments of Gnostic writings or sometimes whole works in their rebuttals attacking and refuting the Gnostic [[heresy]] in defence of their [[Christian]] faith.<ref name="Skarsaune"/><ref name="Smith">{{cite book