Jewish Existentialism is a name for a category of work by Jewish authors, often dealing with Existentialist themes and concepts and intended to answer theological questions that are important in Judaism. The existential angst of Job is an example from the Hebrew Bible of the existentialist motif. Also, theodicy and post-Holocaust theology make up a large part of 20th century Jewish Existentialism. Examples of Jewish thinkers and philosophers whose works are often concerned with existentialist themes include Martin Buber, Joseph B. Soloveitchik, Franz Rosenzweig, Hans Jonas, Emmanuel Levinas, Hannah Arendt, Rabbi Abraham Joshua Heschel and Emil Fackenheim