Neusner's original adoption of form criticism to the rabbinic texts proved highly influential both in North American and European studies of early Jewish and Christian texts. His later detailed studies of Mishnaic law lack the densely footnoted historical approach characteristic of his earlier work. As a result, these works, focusing on literary form, tend to ignore contemporary external sources and modern scholarship dealing with these issues. The irony was that his approach adopted the analytic methodology developed by Christian scholars for the New Testament, while denying there was any relationship between the (Judeo-)Christian corpus and rabbinic works, the latter being treated as isolates detached from their broader historical contexts.