The Beauty of the Unity and the Harmony of the Whole traces the emergence and development of deification in Greek patristic theology and its transformation into the concept of theosis in the writings of Pseudo-Dionysius the Areopagite. Here Vladimir Kharlamov discusses deification in the context of its historical development while avoiding the common tendency of treating it in an anachronistic manner. Significant attention is given to the influence of Neoplatonism on Pseudo-Dionysius, noting at the same time his sophisticated synthesis of Christian and Neoplatonic elements (especially in his exposition of theosis) and importance of his influence both on the further development of Christian theology, and on the advancement of the Neoplatonic tradition. Comprehensive analysis of the development of the deification theme opens possibilities for further study of Trinitarian and christological formations. Readers interested in Christian spirituality, late antiquity, early Christian theology, and Neoplatonism will find this book useful.