Comparing the Incomparable: Gregory of Nazianzus’ use of Comparative Images for God

This study is the first to offer a systematic, integrated account of Gregory of Nazianzus’ comparative images for God as a coherent theological method by examining Gregory of paradoxical use of comparative images for God—images he simultaneously rejects as theologically inadequate yet repeatedly employs in his writings. Although Gregory is celebrated both for his rhetorical brilliance and for his decisive role in articulating pro-Nicene trinitarian theology, scholarship has tended to treat his images either as ornamental products of classical paideia or as incidental illustrations within his theological argumentation. This study argues that Gregory’s use of comparative images for God is shaped by his theological concerns, grounded in his ontology, epistemology, Christology, and pastoral vocation.
Part I establishes the theoretical framework for interpreting Gregory’s ambivalence toward comparison. Chapter 2 demonstrates that Gregory’s warnings against images arise from a robust theological ontological conviction: the triune God is simple, infinite, and utterly incomparable to the compounded, finite, and mutable created order. This ontological gulf renders all comparisons intrinsically inadequate. Chapter 3 then explains why, despite this conviction, Gregory nevertheless employs comparative images. Drawing on his Christology, his account of embodied human cognition, and his self-understanding as theologian, orator, shepherd, and inscriber, the chapter argues that Gregory views images as pastorally necessary tools that ignite the theological imagination and guide the ascent toward contemplation of the incomprehensible God.
Part II offers close readings of nine comparative images Gregory uses to articulate the Trinity. Chapter 4 analyses three “honour images” deployed against Eunomius, while Chapter 5 examines six relational images that express eternal generation, procession, and the unity in distinction of the divine persons. Part II shows how Gregory transforms the images he inherited from classical and biblical sources to safeguard the mystery of the Trinity.
The conclusion synthesises these findings, presenting a systematic account of Gregory’s comparative images as coordinated, mutually corrective, and pedagogically oriented instruments that shape the theological imagination of his audience and illuminate the constructive logic of pro Nicene trinitarian theology.