The chapter constitutes a fundamental step in the proposed itinerary because it shows how Trinitarian revelation prompted a rethinking of divine attributes, recognizing a deeper sense of ontological unity precisely in a substance internally characterized by immanent processions, expressed at Nicaea with the derivative formulas in the Symbol. The Spirit, whose divinity is defended by the Cappadocians, who are protagonists of the path that led to the first Council of Constantinople, makes it possible to reread the issue of attributes through the formula “Life from Life.” Thus, God reveals himself to be one precisely because He is triune and not one despite being triune.