Abstract
In this article I present a new perspective on the theological concept of justification, by focusing not on the content but on the form of this concept. I start with the semantic overabundance related to justification, with specific reference three meanings: the forensic, the effective, and the ontological-theotic. Then, I confront these meanings with Luther's idea of justification as in his De servo arbitrio. Thanks to this, I stress that the theological concept of justification plays a meta-conceptual function: it affirms the priority of divine justification over any standard condition of conceptualization and thinkability of justification – in specific, the structure of imputative justice. This leads to a reconsideration of the role of this concept as "articulus stantis et cadentis ecclesiæ".