In the first part of this study, the theme of the union (henosis) is analysed in Dionysius the Areopagite's De Divinis Nominibus. The starting point of this inquiry is the trinitarian theology of Dionysius. He distinguishes between Union (henosis) and distinction (diakrisis), ad intra of the divine Persons and ad extra of the divines names, understood as powers. The movement of procession and conversion of the divine names follows the very structure of the treatise: from the Union to the One, a movement called "the circle of love." In a second moment,...