What is it with anti-Semites now and in the past?
“Numerous factors including theological differences, competition between Church and Synagogue, the Christian drive for converts,decreed by the Great Commission, misunderstanding of Jewish beliefs and practices, and a perceived Jewish hostility toward Christians. These attitudes were reinforced in Christian preaching, art and popular teaching for two millennia, containing contempt for Jews, as well as statutes which were designed to humiliate and stigmatise Jews.
Modern antisemitism has been described as primarily hatred against Jews as a race with its modern expression rooted in 18th-century racial theories, while anti-Judaism is described as hostility to Jewish religion, but in Western Christianity it effectively merged into antisemitism during the 12th century.:16Scholars have debated how Christian antisemitism played a role in the Nazi Third Reich, World War II and the Holocaust. The Holocaust has driven many within Christianity to reflect on the relationship between Christian theology, practices, and that genocide.”(Wikipedia).
If anything in the Bible is to be believed we may deduce: that Jesus was a Jew. Mary the mother of Jesus, Joseph his father, and Jesus’ brothers, sisters and cousins (including John the Baptist, were Jews. The New Testament, like the Old, was written by Jews (including the Letters of Apostle Paul). The God Christians claim to serve is the God of Judaism, no matter what casuistry concerning new and old covenants is brought to bear. Was the New Testament the origin of anti-Judaism and later anti-Semitism, or is it a kind of pagan accretion, a distortion of Christianity? Given Luther’s – and before him – most of Christendom’s persecution of the Jews, I believe it is an admixture of Christian particularism, the need to define the new religion contrast to an ‘evil other’, emergence of pre-christian gods in the West.