John Wansbrough’s account of the relationship between the Qur’an and the life of Muhammad effectively reverses both the traditional Islamic view, as well as the more positive assessments of 20th century Western scholars. In the first place, Wansbrough argues that the Qur’an “suggests…the product of an organic development from originally independent traditions during a long period of transmission.” These independent traditions, he continues, originated from sectarian monotheistic communities — specifically, broadly Judeo-Christian ones.
This account of the origins of the Qur’an, interesting in itself, also gives rise to an intriguing account of the life of Muhammad. In Wansbrough’s view, these independent traditions gave shape to the traditional life of Mohammed; the life in fact historicizes the content of these traditions, such that the “traditional Judeo-Christian concept of prophethood” functions as the theological ground of the life of Muhammad (Berg 200). The narrative ought to be seen as a dramatization of this theology of prophethood. Thus, for instance, allegations of sorcery and possession in the life of the Muhammad can be considered a faithful representation of the Judeo-Christian, and hence Quranic, understanding of the task of a prophet.
This nexus of connections raises several questions which are decisively important for the theological encounter between Christianity and Islam. In the first place, how would Wansbrough’s understanding of the Qur’an as essentially a theological text derived from independent traditions of a Judeo-Christian stripe alter the Christian conception of Islam? Conceiving the traditional life of Muhammad as a dramatization of such a theology makes this question more prominent. To what extent is Islam, both in its scripture and its traditional self-understanding, to be conceived of as a unique and fundamentally distinct religion? To what extent must it be viewed as foundationally related to, and even derived from, Jewish and Christian theology? In sum, if Wansbrough is correct, how should Christians balance treating Islam as an independent theological and legal tradition with engaging and critiquing it on explicitly Judeo-Christian theological terms?