Bultmann's
History of the Synoptic Tradition (1921) remains highly influential as a tool for biblical research, even among scholars who reject his analyses of the conventional rhetorical
pericopes (narrative units) which comprise the
gospels, and the historically-oriented principles of "
form criticism" of which Bultmann was the most influential exponent. According to Bultmann's definition, "[t]he aim of form-criticism [
sic] is to determine the original form of a piece of narrative, a dominical saying or a parable. In the process we learn to distinguish secondary additions and forms, and these in turn lead to important results for the history of the tradition." In 1941 Bultmann applied
form criticism to the
Gospel of John, in which he distinguished the presence of a lost
Signs Gospel on which John—alone of the evangelists—depended. His monograph,
Das Evangelium des Johannes, highly controversial at the time, became a milestone in
research into the historical Jesus. The same year his lecture
New Testament and Mythology: The Problem of Demythologizing the New Testament Message called on interpreters to
demythologize the New Testament; in particular he argued for replacing
supernatural biblical interpretations with temporal and existential categorizations. His argument, in many ways, reflected a hermeneutical adaption of the existentialist thought of his colleague at the time, the philosopher Martin Heidegger - but also the hermeneutic procedures developed by
Hans Jonas, a student of
Heidegger and an exile from
Nazi Germany. This approach led Bultmann to reject doctrines such as the
pre-existence of Christ. Bultmann believed his endeavors in this regard would make accessible to modern audiences — already immersed in science and technology — the significance (or existential quality) of Jesus' teachings. Bultmann thus thought of his endeavor of "demythologizing the New Testament proclamation" as fundamentally an
evangelism task, clarifying the
kerygma, or gospel proclamation, by stripping it of elements of the first-century "mythical world picture" that had potential to alienate modern people from Christian faith: It is impossible to repristinate a past world picture by sheer resolve, especially a
mythical world picture, now that all of our thinking is irrevocably formed by science. A blind acceptance of New Testament mythology would be simply arbitrariness; to make such acceptance a demand of faith would be to reduce faith to a work. Bultmann saw theology in existential terms, and maintained that the New Testament was a radical text, worthy of understanding yet questioned in his time because of the prevailing Protestant conviction in a supernatural interpretation. In both the boasting of
legalists "who are faithful to the law" and the boasting of the philosophers "who are proud of their wisdom", Bultmann finds a "basic human attitude" of "highhandedness that tries to bring within our own power even the submission that we know to be our authentic being". Standing against all human high-handedness is the New Testament, "which claims that we can in no way free ourselves from our factual fallenness in the world but are freed from it only by an act of God ... the salvation occurrence that is realized in Christ." Bultmann remained convinced that the narratives of the life of Jesus offered
theology in
story form, teaching lessons in the familiar language of
myth. They were not to be excluded, but given explanation so they could be understood for today. Bultmann thought faith should become a present-day reality. To Bultmann, the people of the world appeared to be always in disappointment and turmoil. Faith must be a determined vital act of will, not a culling and extolling of "ancient proofs". Bultmann said about salvation and eternity: "As from now on there are only believers and unbelievers, so there are also now only saved and lost, those who have life and those who are in death." Bultmann carried
form criticism so far as to call the
historical value of the gospels into serious question. Despite that, Bultmann was an outspoken opponent of the
Christ myth theory. In his book
Jesus and the Word, he wrote:"Of course the doubt as to whether Jesus really existed is unfounded and not worth refutation. No sane person can doubt that Jesus stands as founder behind the historical movement whose first distinct stage is represented by the oldest Palestinian community" Concerning the relationship between body, soul, and Spirit, he affirmed a
monistic point of view. == Legacy and criticism ==