 Professor Meyer was best known for his translations of the texts of documents associated with the ancient mystery religions, early Christian magic, and Gnostic texts, of which the most notable have been the Gospel of Thomas and the Gospel of Judas, the former of which is included among the Nag Hammadi library.Meyer edited a collection of English translations of the Nag Hammadi texts for the HarperOne imprint, the most recently revised edition of which has been released as the "Nag Hammadi Scriptures" in 2007, including help from James M. Robinson who has edited an earlier publication of the library.He was regarded as an authority on Gnosticism and had worked on many books on the subject.