A Jewish man visits his rabbi with a lament. "Rabbi, I am very troubled. My son, you see, he went to travel the world and came back a Christian."I assume you're providing additional historical context for centuries of Christian antisemitism. Yes, a common justification for hating Jews is that they were and are unwilling to accept Christ as the messiah. Many take it a step further and claim they've rejected the word of God and that makes them evil.
Church-sanctioned antisemitism was evident when there was only one Christian church, but it did not go away as a result of the Protestant Reformation. Here's Martin Luther: "What then shall we Christians do with this rejected and condemned people, the Jews? . . .Their synagogues . . .should be set on fire, and what does not burn must be covered over with earth so that no man will ever see stone or cinder of them again. . . .Their houses also should be razed and destroyed. . . . All their prayer books. . .should be taken from them."
With respect to the Catholic church, the Second Vatican Council in the 1960s brought an important change. For the first time, the Church publicly and officially rejected the ancient charge that Jews are responsible for the death of Christ.
The rabbi replied, "That is strange, my son also went to travel the world and returned a Christian."
"What should we do?" asked the man.
The Rabbi thought for a moment and told him, "We should take it to God for his guidance."
The two pray to God about their sons and God replies, "You know, it is funny you mention that...."