The story of the fall of Adam and Eve in the three monotheistic religions presents the same fabula which explains the fall, but expressed in three different ways. Judaism, Christianity and Islam have each reserved numerous passages for the story of the fall which raises numerous strictly semiotic questions. Besides the communication problem that the story implies between God and Adam and Eve, who did not fully understand the gravity of the divine prohibition, there is a patent semiotic interest in the story of the crisis that each of these texts of the three religions treat it in its own way by specifying how the three religions conceive the enemy, responsibility and sanction. The study therefore focuses on the stages of the story of the misunderstanding between God and the first human couple, as well as on the problems of communication and meaning posed by the divine prohibition and its interpretation. Thus the plan adopted in this research: after having recalled the thematic specificities of the story of the fall according to the texts of the three religions, we will look at the way in which they each construct the subject, the anti-subject and the enemy, as well as their own conception of the enemy, of responsibility and of fault or forgiveness.