Was Jesus a Christian

If Jesus was a Jew, why is there Christian hostility towards Jews?

A short answer to this question could be: Exactly because of this.
Firstly, it is already clear in the New Testament that there were internal Jewish conflicts in the 1st century, about the road to Rome and after the destruction of the temple. What is often described as a Christian-Jewish conflict is in fact an intra-Jewish one. Because not only was Jesus a Jew, but also the first Christians were Jews. When Christianity and Judaism went their separate ways, a process began in Christianity to develop a negative image of Judaism. This process was shaped by the fact that one's own negative, abysmal, insecure, and religious problem was projected onto the Jews. When "the Jews" were dark, their own faith shone.

First of all, there is the classic accusation, which is actually already laid out in the New Testament Murder of god. This presupposes, first, that Jesus' death on the cross was not the Roman authorities but the Attributed to Jews and, secondly, that Jesus Christ is understood as the Son of God and thus godlike. Both of these can hardly be substantiated biblically and historically and point to a later (un) salvation-historical narrative. The inner Christian logic of the death of Jesus Christ as a salvation event confirmed by his resurrection Jews and the peoples, So everyone is countered with the murder charge. To put it pointedly and theologically somewhat under-complex: If it were murder, then not a redemption event, if it is a redemption event, then those responsible are at least tools of God in the sense of the believed redemption event. The accusation of the murder of God against the Jews corresponds with the fact, which later became an offensive fact, that most Jews did not confess to the new faith in the Messiah Jesus. Perhaps, however, the accusation of the murder of God also serves to support one's own efforts in the belief that Jesus Christ is true God and true man, as it were ex negativo.

The alleged betrayal motive of Judas is in turn an intensification in this model of faith and thought, which conflicts with the inner logic of Jesus' death, which is understood as part of the divine salvation event. Judas allegedly betrays Jesus through a kiss marking the Roman soldier. The break with the inner logic of the salvation process has already been mentioned. The second irritation arises when we know that Jesus had already achieved some fame and that the security authorities were hardly dependent on a physical signal to mark the person to be seized. The fact that money was also supposed to have been paid for this marking supplements the theory of entanglement and it almost necessarily ends with the confirmation of the evil through his suicide.

For the church fathers of the old church, Judas then became a symbol for the Jews.

What is presented in detail as the history of Judas is generally the history of the Jews. […] Who are the sons of Judas? The Jews. For the Jews are named not after Judah [the son of Jacob], who was a holy man, but after Judas the traitor. In the line of Judah we [Christians] are Jews in spirit - but in the line of the traitor Judas the Jews are after the flesh. "

According to this reading, Jews are not only followers of Judas and thus also traitors to God, but henceforth the comprehensively negative counter-image to Christians. Old versus new, flesh versus spirit, law versus grace, vengeance versus love and in more modern times, among other things, directly following these dualisms, particularity versus universality and violence versus non-violence. These dualisms persist to this day and are essentially an extension of that hatred of Jews that has grown in the history of the Church.