This article analyses the first traces of postsecular turn in historical theory, arguing that they first emerged in Dominick LaCapra’s book History and Its Limits: Human, Animal, Violence (2009) and in Allan Megill’s subsequent polemic with that work. The author claims that what prevails in LaCapra’s narrative is the rhetoric of “resisting apocalypse”, thus demonstrating how he inscribes postsecular themes with the issue of trauma, together with its religious connotations. The discussion between LaCapra and Megill is treated here as a point of departure for considering the forms that the postsecular can take in historical theory.