Although I will trace the development of the occult across a wide corpus of printed materials, in particular I will focus on the publication and reception of Khatchatur Erzrumetsi's (1666-1740) encyclopedic compendium of philosophy in the early 18th century. Erzrumetsi, an Armenian Catholic theologian who had received his education in Rome, brought together and even versified his vast understanding of various branches of science—including a detailed investigation of astrology—which consequently incurred the sardonic scorn of other intellectuals in the Armenian church. I will suggest that the study of the occult's relationship to print culture can offer historians rich insight into various epistemic tensions between Armenian Catholic, Apostolic, and mercantile interpretive communities. The stakes of these discursive battles were no less than what constitutes acceptable bodies of knowledge in the first place: where the limits of reason are marked, and who marks them.