Claude G. Montefiore revolutionized Jewish-Christian dialogue in early 20th century England by proposing a radical new vision: the selective incorporation of New Testament teachings into Jewish sacred tradition. Through comparative analysis of Gospel and rabbinic literature, Montefiore identified common theological foundations between Judaism and Christianity, challenging centuries of mutual religious antagonism. His scholarly approach traced the evolution of interfaith relations from "Mutual Negation" during fundamentalist periods through "Mutual Derogation" in modern scholarship, ultimately advocating for "Mutual Supplementation and Acceptation." Working closely with Israel Abrahams, Montefiore developed detailed textual commentaries that positioned Jesus and Paul as authentic Jewish voices within the prophetic tradition. His mediating methodology acknowledged both the merits and shortcomings of rabbinic and Gospel sources, establishing a more objective framework for interfaith scholarship free from apologetic biases. While Montefiore's proposal to adopt New Testament passages remains controversial, his emphasis on universal ethical principles and rational inquiry laid crucial groundwork for modern Jewish-Christian understanding. However, his liberal approach faced limitations, particularly in its anti-nationalist and anti-legalistic stances.