Luther’s final attitude toward the Jewish people, as evidenced in his last sermon: “We want to treat them with Christian love and to pray for them, so that they might become converted and would receive the Lord” (Weimar edition, Vol. 51, p. 195).
Yet, we will show them Christian love and pray for them that they may be converted to receive the Lord, whom they should honor properly before us. Whoever will not do this is no doubt a malicious Jew, who will not stop blaspheming Christ, draining you dry, and, if he can, killing [you]
That's the thing about Luther. His early work seems sweet and reasonable toward Jews. Just like the young Mohammed, actually.
But then look what happens in later life - again just like Mohammed, the Jews refused to play ball. They refused to convert to Luther's religion, just like they refused to convert to Mohammed's.
Then in a flash the mask came off, revealing the hideous and vengeful spirit within. Gone were the sweet and reasonable words about the Jews, to be replaced with "The Jews and their Lies".
Luther's last words to the Jews were effectively 'Convert or die'. Not the beautiful mellowing in old age that one was hoping for.