The Prophet Jeremiah was a figure of fascination in ancient Judaism, extending well back into the Persian period. Copies of six MSS from the Qwnran scrolls now designated the Apocryphon of Jeremiah C (4Q385a, 4Q387, 4Q388a, 4Q389, 4Q390, 4Q387a)-as well as two other Jeremiah 'Apocrypha' (4Q383, 4Qpap384)-attest to his prevailing interest for the Qumran sectarians. However, because of the supposed paucity of exegetical treatments from the Book of Jeremiah at Qumran, and .because of the small number and poor condition of scriptural Jeremiah texts, commentators have tended to dismiss his impact in the Dead Sea Scrolls. Only fairly recently have studies revealed a thematic importance for the Prophet Jeremiah in the sectarian leadership ideal, but his overall siw.ificance and function have yet to be factored in connection with the actual contents of=t;{pocryphon of Jeremiah C. . study is a close reading of the Apocryphon of Jeremiah C, but Within the broader realm of discussions pertaining to so-called 'rewritten Bible,' the processes that guided Scripture transmission, and the impact of collective memory, pUblic personae and commemorated 'reputations' in Second Temple Jewish literature. The individual MSS of the Apocryphon are considered for how they are inter-related and for how they reflect a history of development that perhaps corresponds with the social world of its authors and collectors. The text is evaluated synchronically for how the Prophet Jeremiah is presented, and for how his character functioned as a leadership ideal and critique. The contents of the Apocryphon and the Jeremiah traditions are then evaluated within the Qwnran sectarian literature to expand and enhance the presence and impact of the Jeremiah figure and the Jeremiah Scriptures for the sectarian group. This discussion is situated in its historical milieu through a consideration of Jeremianic traditions that are extant elsewhere in Second Temple Judaism. The selection of texts is not exhaustive, but is focused on those that feature or reflect elements of Jeremiah's character as either a prophet, a priest, or a Mosaic leader. This study will then consider how these various re-presentations of the Jeremiah figure served as authorizing features, and how they are related to the transmission and use of Scripture, the transition of prophecy from an oral to a scribal medium, and how the employment of this single individual served to enforce a multiplicity of cultural and religious ideals. The Jeremianic traditions in Second Temple Judaism reveal a recognition and regard for Jeremiah's personae, which appear to have imbued individual texts and ideals with authority in their employment.