Why were the Christians anti-Semitic?

The first Christians such as Justin Martyr, the Church Fathers such as Augustine, the Reformers such as Luther were all anti-Semites. Why was that so? Here are some quotes: > Luther: "Accordingly, it must and dare not be considered a trifling > matter but a most serious one to seek counsel against this and to save > our souls from the Jews, that is, from the devil and from eternal > death. My advice, as I said earlier, is: First, that their synagogues > be burned down, and that all who are able toss in sulfur and pitch; it > would be good if someone could also throw in some hellfire. That would > demonstrate to God our serious resolve and be evidence to all the > world that it was in ignorance that we tolerated such houses, in which > the Jews have reviled God, our dear Creator and Father, and his Son > most shamefully up till now but that we have now given them their due > reward." > > > John Chrysostom: "Again the Jews, the most miserable and wretched of > all men. But today the Jews, who are more dangerous than any wolves, > are bent on surrounding my sheep; so I must spar with them and fight > with them so that no sheep of mine may fall victim to those wolves. > Isaiah called the Jews dogs and Jeremiah called them mare-mad horses. > This was not because they suddenly changed natures with those beasts > but because they were pursuing the lustful habits of those animals." > > Pope Clement VIII: "All the world suffers from the usury of the Jews, > their monopolies and deceit. They have brought many unfortunate people > into a state of poverty, especially the farmers, working class people > and the very poor. Then, as now, Jews have to be reminded > intermittently that they were enjoying rights in any country since > they left Palestine and the Arabian desert, and subsequently their > ethical and moral doctrines as well as their deeds rightly deserve to > be exposed to criticism in whatever country they happen to live." https://www.jpost.com/blogs/the-jewish-problem---from-anti-judaism-to-anti-semitism/the-jewish-problem-adversus-judeaos-against-the-jews-376333