The Christ myth theory, also known as the Jesus myth theory, Jesus mythicism, or the Jesus ahistoricity theory, is the fringe view that the story of Jesus is a work of mythology with no historical substance. Alternatively, in terms given by Bart Ehrman paraphrasing Earl Doherty, it is the view that "the historical Jesus did not exist. Or if he did, he had virtually nothing to do with the founding of Christianity."

The mainstream scholarly consensus, developed in the three quests for the historical Jesus, holds that there was a historical Jesus of Nazareth who lived in first-century AD Roman Judea,"He certainly existed, as virtually every competent scholar of antiquity, Christian or non-Christian, agrees, based on certain and clear evidence." B. Ehrman, 2011 Forged : writing in the name of God . p. 256-257 but his baptism and crucifixion are the only facts of his life about which a broad consensus exists. Beyond that, mainstream scholars have no consensus about the historicity of other major aspects of the gospel stories, nor the extent to which they and the Pauline epistles may have replaced the historical Jesus with a supernatural Christ of faith.

Proponents of mythicism, in contrast, argue that a historical Jesus never existed, and that the gospels historicized a mythological character. This view can be traced back to the Age of Enlightenment, when history began to be critically analyzed; it was revived in the 1970s. Most mythicists employ a threefold argument: they question the reliability of the Pauline epistles and the gospels to establish Jesus's historicity; they argue that information is lacking on Jesus in secular sources from the first and early second centuries; and they argue that early Christianity had syncretistic and mythological origins as reflected in both the Pauline epistles and the gospels, with Jesus being a deity who was concretized in the gospels.

The non-historicity of Jesus has never garnered significant support among scholars. Mythicism is rejected by virtually all mainstream scholars of antiquity, and has been considered a fringe theory for more than two centuries, but has attracted more attention in popular culture with the rise of the internet.

Traditional and modern approaches on Jesus

Mainstream scholarship asserts that there was a historical Jesus. However, scholars differ about the accuracy of the biblical accounts about Jesus, with only two events supported by nearly-universal scholarly consensus: Jesus' baptism, and his crucifixion. The mainstream scholarly view is that the Pauline epistles and the gospels describe the "Christ of faith", presenting a religious narrative which replaced the historical Jesus who did live in first-century Roman Judea. Martin Kähler made the famous distinction between the "Jesus of history" and the "Christ of faith", arguing that faith is more important than exact historical knowledge. According to Ehrman, Jesus was a first-century Judean Jew, who was not like the Jesus preached and proclaimed today. The most widely held view by critical scholars is that Jesus was an apocalyptic prophet who was subsequently deified.

The origins and rapid rise of Christianity, as well as the historical Jesus and the historicity of Jesus, are a matter of longstanding debate in theological and historical research. While Christianity may have started with an early nucleus of followers of Jesus, within a few years after the presumed death of Jesus in , at the time Paul started preaching, a number of "Jesus-movements" seem to have existed, which propagated divergent interpretations of Jesus' teachings. A central question is how these communities developed and what their original convictions were, as a wide range of beliefs and ideas can be found in early Christianity, including adoptionism and docetism, and also Gnostic traditions which used Christian imagery, which were all deemed heretical by proto-orthodox Christianity.

Quest for the historical Jesus

A first quest for the historical Jesus took place in the 19th century when hundreds of biographies about Jesus were proposed. German theologian David Strauss (1808–1874) pioneered the search for the "historical Jesus" by rejecting all supernatural events as mythical elaborations. His 1835 work, Life of Jesus, was one of the first and most influential systematic analyses of the life story of Jesus, aiming to base it on unbiased historical research.Jesus as a Figure in History: How Modern Historians View the Man from Galilee by Mark Allan Powell, Westminster John Knox Press, 1998 pages 13–15The Jesus Quest: The Third Search for the Jew of Nazareth. by Ben Witherington III, InterVarsity Press, 1997 (second expanded edition), pp. 9–13 The Religionsgeschichtliche Schule, starting in the 1890s, used the methodologies of higher criticism,Duignan, Brian (2016), Religionsgeschichtliche Schule, Encyclopedia Britannica a branch of criticism that investigates the origins of ancient texts in order to understand "the world behind the text". It compared Christianity to other religions, regarding it as one religion among others and rejecting its claims to absolute truth, and demonstrating that it shares characteristics with other religions. It argued that Christianity was not simply the continuation of the Hebrew Bible, but syncretistic, and was rooted in and influenced by Hellenistic Judaism (Philo) and Hellenistic religions like the mystery cults and Gnosticism. Martin Kähler questioned the usefulness of the search for the historical Jesus, making the famous distinction between the "Jesus of history" and the "Christ of faith", arguing that faith is more important than exact historical knowledge. Rudolf Bultmann (1884–1976), who was related to the Religionsgeschichtliche Schule,Kurt Rudolph (1987), Religionsgeschichtliche Schule, Encyclopedia of Religion emphasized theology, and in 1926 argued that historical Jesus research was both futile and unnecessary; however, Bultmann slightly modified that position in a later book.Edwin Broadhead "Implicit Christology and the Historical Jesus" in the Handbook for the Study of the Historical Jesus edited by Tom Holmen and Stanley E. Porter, Brill 2010 pp. 1170–1172 The first quest ended with Albert Schweitzer's 1906 critical review of the history of the search for Jesus' life in The Quest of the Historical Jesus—From Reimarus to Wrede. The first quest was challenged in the 19th and early 20th centuries by authors who denied the historicity of Jesus, notably Bauer and Drews.

The second quest started in 1953, in a departure from Bultmann.The First Christian by Paul F. M. Zahl, Eerdmans 2003 pp. 23–25 Several criteria, the criterion of dissimilarity and the criterion of embarrassment, were introduced to analyze and evaluate New Testament narratives. This second quest declined in the 1970s due to the diminishing influence of Bultmann, and coinciding with the first publications of George Albert Wells, which marks the onset of the revival of Christ myth theories. According to Paul Zahl, while the second quest made significant contributions at the time, its results are now mostly forgotten, although not disproven.The First Christian: Universal Truth in the Teachings of Jesus by Paul F. M. Zahl, Eerdmans 2003 p. 12

The third quest started in the 1980s and introduced new criteria.Criteria for Authenticity in Historical-Jesus Research by Stanley E. Porter, Bloomsbury 2004 pp. 100–120 Primary among these areWho Is Jesus? by Thomas P. Rausch (Jul 1, 2003) pages 35–40John P. Meier "Criteria: How do we decide what comes from Jesus?" in The Historical Jesus in Recent Research by James D. G. Dunn and Scot McKnight, Eisenbrauns 2006 pages 126–142 the criterion of historical plausibility, the criterion of rejection and execution, and the criterion of congruence (also called cumulative circumstantial evidence), a special case of the older criterion of coherence.Petr Pokorny "Jesus Research as Feedback" Handbook for the Study of the Historical Jesus by Tom Holmen and Stanley E. Porter, Brill 2010 pp. 338–339 The third quest is interdisciplinary and global,Soundings in the Religion of Jesus: Perspectives and Methods in Jewish and Christian Scholarship by Bruce Chilton Anthony Le Donne and Jacob Neusner 2012 page 132 carried out by scholars from multiple disciplines and incorporating the results of archeological research."Jesus Research and Archaeology: A New Perspective" by James H. Charlesworth in Jesus and archaeology edited by James H. Charlesworth 2006 pp. 11–15 The third quest primarily yielded new insights into Jesus' Palestinian and Jewish context rather than the person of Jesus himself. It also has made clear that all material on Jesus has been handed down by the emerging Church, raising questions about the criterion of dissimilarity, and the suitability of ascribing material solely to Jesus rather than the emerging Church.

Historical existence of Jesus

To establish the existence of a person without any assumptions, one source from one author (either a supporter or opponent) is needed; for Jesus there are at least 12 independent sources from five authors in the first century from supporters and 2 independent sources from two authors from non-supporters. Since historical sources on other named individuals from first century Galilee were written by either supporters or enemies, these sources on Jesus cannot be dismissed. Bart Ehrman estimates that there are about 30 surviving "independent sources that know there was a man Jesus" written by 25 authors, including 16 in the New Testament. With at least 14 sources by supporters and non-supporters, within a century of the crucifixion, there is much more evidence available for Jesus than for any other notable person from first-century Galilee.

The mainstream scholarly view holds that there was a historical Jesus of Nazareth who lived in first-century AD Roman Judea, but scholars differ on interpretations of portraits of who he was. New Testament scholar Bart D. Ehrman states that Jesus "certainly existed, as virtually every competent scholar of antiquity, Christian or non-Christian, agrees".

Following the criteria of authenticity-approach, scholars differ on the historicity of specific episodes described in the biblical accounts of Jesus, but the baptism and the crucifixion are two events in the life of Jesus that are subject to "almost universal assent". According to historian Alanna Nobbs,

Historical portraits of Jesus have often differed from each other and from the image portrayed in the gospel accounts. The primary portraits of Jesus resulting from the third quest are: apocalyptic prophet; charismatic healer; cynic philosopher; Jewish Messiah; and prophet of social change.The Cradle, the Cross, and the Crown: An Introduction to the New Testament by Andreas J. Köstenberger, L. Scott Kellum 2009 pp. 124–125The Cambridge History of Christianity, Volume 1 by Margaret M. Mitchell and Frances M. Young, Cambridge University Press 2006 page 23 According to Ehrman, the most widely held view is that Jesus was an apocalyptic prophet who was subsequently deified.

According to New Testament scholar James Dunn, it is not possible "to construct (from the available data) a Jesus who will be the real Jesus". According to Philip R. Davies, a biblical minimalist, "what is being affirmed as the Jesus of history is a cipher, not a rounded personality". According to Ehrman, "the real problem with Jesus" is not the mythicist stance that he is "a myth invented by Christians", but that he was "far too historical", that is, a first-century Judean Jew, who was not like the Jesus preached and proclaimed today. According to Ehrman, "Jesus was a first-century Jew, and when we try to make him into a twenty-first century American we distort everything he was and everything he stood for."