Sentence:  Yes , he believed that the Jews were `` enemies of the Reich '' , and such a belief is , of course , typical of `` patriotic '' anti-Semites ; but he believed in the <WSD>Jew</WSD> as enemy in a kind of abstract , theological way , like a member of a cult speculating on the nature of things . 
Meaning of the word marked with <WSD> tags:  a person belonging to the worldwide group claiming descent from Jacob (or converted to it) and connected by cultural or religious ties