You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Martin_Luther

Context:
Luther spoke out against the Jews in Saxony, Brandenburg, and Silesia. Josel of Rosheim, the Jewish spokesman who tried to help the Jews of Saxony in 1537, later blamed their plight on "that priest whose name was Martin Luther—may his body and soul be bound up in hell!—who wrote and issued many heretical books in which he said that whoever would help the Jews was doomed to perdition." Josel asked the city of Strasbourg to forbid the sale of Luther's anti-Jewish works: they refused initially, but did so when a Lutheran pastor in Hochfelden used a sermon to urge his parishioners to murder Jews. Luther's influence persisted after his death. Throughout the 1580s, riots led to the expulsion of Jews from several German Lutheran states.

Question:
What did Luther speak out about in Saxony?

the Jews