This paper proposes vulnerability as a ground for an epistemic ethic of care (Johnson 2023) that regulates the relationship between systematic theology and biblical studies. Though the taxonomy of knowledge in the modern university treated these theological subdisciplines as autonomous self-contained units for many centuries (Farley 1983), there is a growing consensus that they are essentially intertwined. Foregoing this illusion of immunity from one another, these subdisciplines are treated here as part of a theological community of inquiry, related to one another through a relational network that creates interdependencies and epistemic vulnerabilities for each. Inter alia, these interdependencies are based on how they each relate to the scriptural canon, contemporary church life, and tradition. In part one of this paper, we aim to articulate these interdependencies and vulnerabilities, and an epistemic ethic of care for these vulnerabilities that each has to demonstrate for the well-being of the theological community of inquiry. In the second part, we showcase how we - colleagues from the two subdisciplines - collaborate in a specific study titled "Divine vulnerability". We will more specifically use a dynamic, conceptual, and semantic map through which we carefully create space for mutual enrichment as a case study. Using that, we will demonstrate the linguistic interplay of vulnerabilities and dependencies of the subdisciplines at each node of the map, which becomes a point of methodological ambiguity between self-opening and closure, linguistic symphony and cacophony, respect for proper limits and transgression, mutual transformation and mere appropriation, etc. Thus, each node becomes a point at which the ethics of care can be practiced, and a community of inquiry fostered. Keywords: epistemic vulnerability | epistemic ethic of care | interdisciplinary collaborations | theological community of inquiry | biblical studies and systematic theology