Marcion Hoffmann's 1982 doctoral thesis,
Marcion: On the Restitution of Christianity, was published in 1984. Hoffmann proposed that
Marcion must be dated substantially before the dates assigned on the basis of patristic testimony. According to Hoffmann, Marcion possessed the earliest version of
Luke and preserved the primitive version of Paul's letters. He also attempted to discredit much of the early
patristic evidence for Marcion's life and thought as being
apologetically driven. Reviews of this work reflected its controversial nature. Writing in
Revue Biblique,
Jerome Murphy-O'Connor called attention to the radical nature of Hoffmann's theory while asserting that it was "unlikely that a book of equal importance will appear in this generation." J. L. Houlden commended Hoffmann's skill in "reading between the lines" of Marcion's ancient critics and called the book "a model of how doctrinal history should now be written", while George E. Saint-Laurent concluded, "[H]ereafter Marcion's positive contribution to the mainstream tradition of Catholic-Orthodox Christianity so far as the decisive role of Paul is concerned will have to be acknowledged." Other reviewers thought that Hoffmann's examination of the evidence was valuable but that his conclusions could only be regarded as speculative. The book received a very negative assessment from
C. P. Bammel, who accused the author of numerous historical errors and misinterpretations of patristic texts. In a book published in 1993,
Bart D. Ehrman noted that Hoffmann's
Marcion had "not been well received". Hoffmann responded to critics of the
Marcion in a special issue of
The Second Century. His thesis has since been revisited by New Testament scholars including
David Trobisch, Joseph Tyson and
Robert M. Price.
Ancient critics of Christianity Hoffmann has also published English translations of three early pagan opponents of Christianity. In each case, the original work has been lost but the arguments have survived through contemporary works written to refute them. The first,
Celsus: On the True Doctrine was published in 1987. Hoffmann recreated the arguments of
Celsus using the work
Contra Celsum, written by
Origen of Alexandria. Theology professor William Weinrich commented that Hoffmann "wisely forgoes any attempt to restore the original order of Celsus' work, opting rather to present Celsus' writing thematically." Others have criticized Hoffman's recreations of
Celsus as misrepresentative. In 1994 Hoffmann published
Porphyry: Against the Christians (the Literary Remains). Hoffmann's work is a new translation based on a 15th-century manuscript preserved by
Macarius Magnes. The author of the criticisms in that manuscript is not known with certainty. The argument that the critic was Porphyry was first advanced by the historian
Adolph von Harnack, though his theory has been disputed. In a recent translation of the contemporary works citing
Against the Christians, Robert M. Berchman notes that Hoffmann's translation is "an important contribution to the study of the text." In 2004 he published a translation of
Julian: Against the Galileans, a work by the last non-Christian Roman Emperor,
Julian. Julian's arguments survived through the work
Contra Julianum written by
Cyril of Alexandria.
The "Jesus Project" In 2007 Hoffmann, together with New Testament scholars
Robert Price and
Gerd Lüdemann, announced the formation of a colloquium to re-examine the traditions for the existence of a historical Jesus. The initial meeting of the so-called "
Jesus Project " took place in Amherst, NY, December 5–7, 2008 and included fifteen scholars from a variety of disciplines including
James Tabor,
Robert Eisenman, and
Bruce Chilton. The Project, according to Hoffmann, was designed to determine "what can be reliably recovered about the historical figure of Jesus, his life, his teachings, and his activities, utilizing the highest standards of scientific and scholarly objectivity". The Project was seen as a continuation and modification of the
Jesus Seminar, founded by
Robert Funk and
John Dominic Crossan. In 2009 the
Center for Inquiry de-funded the Jesus Project and discontinued CSER. He wrote that there were problems with adherents to the
Christ myth theory, the idea that Jesus did not exist, asking to set up a separate section of the project for those committed to the theory, which Hoffmann felt signalled a lack of necessary skepticism. He was also concerned that the media was sensationalizing the project, with the only newsworthy conclusion being that Jesus had not existed, a conclusion he said most participants would not have reached. In 2012, Hoffmann wrote concerning the "Jesus Process" where he extensively criticized christ myth theory and its proponents. == Humanist and atheist criticisms ==