On the occasion of the death of his friend and colleague, Montague David Eder Sigmund Freud succinctly articulates the inaccessibility of Jewishness as follows: “We were both Jews and knew of each other that we carried that miraculous thing in common, which—inaccessible to any analysis so far—makes the Jew” (Freud 421). Despite the difficulty in defining Jewishness as Freud points out, I will provide an articulation of Jewish identity as presented in post war American fiction more exactly my aim is to examine the Jewish identity in Saul Bellow’s novel titled Herzog (1964). He was awarded the Noble Prize for his novel in literature in 1976. [...] My approach relies on the detailed examination of five components and basic shaping factors of Jewish identity: antisemitism, language, diaspora, ethnicity and religion. I will explore which of these notions is dominant or less relevant when describing Jewish identity.