This synchronic analysis of the longest narrative passage of the "Book of Jeremiah", with a specific narratological method, tries to resolve some riddles of the text, e.g. the curious narrative sequence of chap. 32, the "chaotic" chronology and the intention of the report. It focuses on the persons and their relations, especially Jeremiah himself as mediator of God's word, but also other characters. Finally, the chapters 32-45 turn out to be an original narrative unit. Doctoral dissertation under the supervision of Professor A. Wenin, Universite Catholique de Louvain, Belgique. Elena Di Pede is now Collaborateur scientifique FNRS (Fonds National de la Recherche Scientifique), Bruxelles, Belgique.