The Disputation of Barcelona (July 20–24, 1263) was a formal ordered medieval debate between representatives of Christianity and Judaism regarding whether or not Jesus was the Messiah.
Ramban (Moses ben Nahman): Hebrew: מֹשֶׁה בֶּן־נָחְמָן Mōšeh ben-Nāḥmān, “Moses son of Nahman”; 1194–1270), was a leading medieval Jewish scholar, Sephardic rabbi, philosopher, physician, kabbalist, and biblical commentator.
It is argued that the “servant” represents the nation of Israel, which would bear excessive iniquities, pogroms, blood libels, anti-judaism, antisemitism and continue to suffer without cause (Isaiah 52:4) on behalf of others (Isaiah 53:7,11–12).
https://en.m.wikipedia.org/wiki/Servant_songs
https://en.m.wikipedia.org/wiki/Nachmanides
https://en.m.wikipedia.org/wiki/Hyam_Maccoby
“Hyam Maccoby (Hebrew: חיים מכובי, 1924–2004) was a British Jewish scholar and dramatist specialising in the study of the Jewish and Christian religious tradition. His grandfather and namesake was Rabbi Hyam (or “Chaim”) Maccoby (1858–1916), better known as the “Kamenitzer Maggid”, a passionate religious Zionist and advocate of vegetarianism and animal welfare.
Maccoby was a Domus Exhibitioner in Classics at Balliol College, Oxford. During the Second World War he served in the Royal Signals.
Maccoby was librarian of Leo Baeck College in London. In retirement he moved to Leeds, where he held an academic position at the Centre for Jewish Studies, University of Leeds.[1] Maccoby was known for his theories of the historical Jesus and the historical origins of Christianity.
Maccoby also wrote extensively on the phenomenon of ancient and modern Anti-Semitism. He considered the Gospel traditions blaming the Jews for the death of Jesus and especially the legend of Judas Iscariot (which he believed to be a product of the Gentile Pauline Church) as the roots of Christian antisemitism. Other topics of Maccoby’s scholarship include the Talmudictradition and the history of the Jewish religion.”