Theology

Korean: 신학 (Sinhak)
Hanja: 神學 — the study of the divine / learning about God
,Related: 통일신학 (Tongil Sinhak) — Unification Theology; 통일사상 (Tongilsasang) — Unification Thought

What is Theology?

Theology (신학, 神學) — from the Greek theos (God) and logos (word, reason, discourse) — is the disciplined inquiry into the nature of God, God's relationship to the world and to human beings, and the meaning of human existence in light of that relationship. It is the attempt to give ordered, reasoned, and communicable form to what religion knows, experiences, and believes about the divine.

In the Unification understanding, however, theology as a human enterprise must be carefully distinguished from the living, personal truth that theology seeks to articulate. Rev. Moon consistently taught that conventional theology, however rigorous its methods, faces an inherent limitation: it is always the human interpretation of a revelation, not the revelation itself. The Exposition of the Divine Principle — the Wolli Kangron (원리강론, 原理講論) — is not presented as one more theological system alongside the existing traditions but as the disclosure of the Principle (Wolli, 원리) that underlies and grounds all theological inquiry. This distinction — between the Principle itself and the theologies that approximate it — is the defining feature of the Unification theological stance.

Philosophers, saints and sages set out to pave the way of goodness for the people of their times. Yet so many of their accomplishments have become added spiritual burdens for the people of today.

— Introduction, Exposition of the Divine Principle

This is not a dismissal of theological tradition. It is a precise diagnosis: accumulated theological systems, however valuable, can become obstacles when they are treated as final answers rather than as provisional steps toward a truth they could not yet fully articulate.

Section I — Etymology: 神學 and Its Tensions

The Korean term 신학 (神學) follows the classical Sino-Korean pattern of compound terms derived from Chinese. 神 (sin) carries a rich range of meaning: divine, spirit, mysterious, numinous, vitally alive. In classical Chinese, 神 referred to the active, animating power of Heaven — not merely an abstract deity but the vital force that moves and governs all things. 學 (hak) means study, learning, school, or discipline — the systematic pursuit of knowledge in a particular domain.

Together, 신학 names “the disciplined study of the divine” — a field that has been practiced across virtually every major civilization, under different names and with different methods, wherever human beings have asked serious questions about God, the cosmos, and their own nature.

The Unification theological vocabulary adds two important compounds that reveal how the movement positions itself in relation to conventional theology.

통일신학 (Tongil Sinhak, Unification Theology) — the specific theological system derived from the teaching of Rev. Moon, as systematized by scholars associated with the Unification Theological Seminary (Barrytown, New York) and the broader dialogue movement. This term locates the movement within the family of theological enterprises, acknowledging that it is doing theology, working with the methods and categories of theological inquiry.

통일사상 (Tongilsasang, Unification Thought) — the broader philosophical system that Sang-hun Lee developed from Rev. Moon's teaching, covering ontology, epistemology, ethics, history, education, art, and politics. This term deliberately reaches beyond theology into philosophy, reflecting the Unification conviction that the Principle cannot be contained within a purely religious or theological framework. It addresses questions that conventional theology leaves to secular philosophy — and does so from the foundation of the Principle itself.

The relationship between these two terms—Unification Theology and Unification Thought — maps the distinctive intellectual terrain of the Unification movement: theology for the specifically religious and revelatory dimensions, Unification Thought for the systematic philosophical elaboration.

Section II—The Divine Principle: Beyond Theology?

The question of how to categorize the Divine Principle within the landscape of theological and philosophical literature is genuinely complex. It shares features with systematic theology (it presents a comprehensive, ordered account of God, creation, fall, and restoration), with biblical commentary (it engages extensively with both the Hebrew Bible and the New Testament), and with philosophy of religion (it engages scientific, historical, and logical arguments alongside scriptural ones).

Yet the DP Preface — written by Hyo Won Eu, the first president of the Unification Church of Korea who prepared the systematic presentation under Rev. Moon's guidance — describes the text as containing not a theology but the Principle itself: a disclosure of the governing laws of God's own creative and redemptive activity. The distinction is significant. A theology is an interpretation of revelation; the Principle claims to be the revelation itself — or rather, the systematic articulation of the Principle that underlies all revelation.

As the DP Preface states, the purpose of this presentation is to make accessible the same eternal truth that all religious scriptures and all religious traditions have been approximating: “Exposition of the Divine Principle expresses a universal truth. It inherits and builds upon the core truths which God revealed through the Jewish and Christian scriptures and encompasses the profound wisdom of the Orient.”

This universalist claim — that the Principle encompasses and explains all prior religious traditions — is one of the most distinctive features of the Unification theological stance. It is not a theology in competition with other theologies. It is, in its own self-understanding, the meta-theological framework within which all other theologies find their partial truths and their limitations.

Section III — Sources of Unification Theology

Where conventional Christian theology draws on Scripture, tradition, reason, and experience (the Wesleyan quadrilateral, or its various equivalents in other traditions), Unification theology identifies a distinct hierarchy of sources — each layer building upon and contextualizing the layers below it.

The Divine Principle (Wolli Kangron) stands as the foundational doctrinal source. It is the systematic presentation of Rev. Moon's teaching, developed in cooperation with Hyo Won Eu and published in its current authoritative Korean form in 1966. It provides the ontological framework (Principle of Creation), the diagnostic analysis of the human condition (the Fall), and the comprehensive interpretive scheme for religious history (Providence of Restoration). All subsequent Unification theological reflection takes the Divine Principle as its primary point of reference.

The Sermons and Words of True Parents — the vast corpus of Rev. Moon's speeches, sermons, and teachings, spanning from 1946 through 2012, preserved in over 600 volumes of the Mal Sseum (말씀) series and partially accessible on tplegacy.net. These are not supplementary to the Divine Principle but its living context: the Principle presented with pastoral depth, practical application, emotional urgency, and constant engagement with the specific providential conditions of the moment. The Cheon Seong Gyeong (a thematic compilation) and Cham Bumo Gyeong (a biographical chronicle) are the most organized presentations of this material.

World Scriptures — in contrast to theological traditions that recognize only a single canon, Unification theology treats the sacred texts of all major world religions as genuine vehicles of divine revelation, each preserving a portion of the truth that the Principle contains in its fullness. The publication of World Scripture and the Teachings of Sun Myung Moon (2007), placing selections from the world's religious texts alongside Rev. Moon's own teaching on the same themes, enacts this inter-scriptural approach concretely.

Reason and Science — the EDP explicitly employs scientific, historical, and logical argument alongside scriptural interpretation. The Introduction to the Divine Principle argues that religion and science, though currently operating independently, are both paths toward the same integrated truth — and that the Divine Principle offers the framework within which this integration becomes possible. Unification theology therefore does not treat reason and science as sources that merely confirm or fail to contradict revelation; it treats them as genuine partial expressions of the same Principle that revelation discloses directly.

Direct Revelatory Experience — the foundation of Rev. Moon's own theological authority is his direct communication with God and with key figures in the spirit world. The EDP Preface describes the original manuscript of the Divine Principle as something Rev. Moon “wrote and dictated” after receiving his initial calling in 1935 and spending years of prayer, suffering, and spiritual encounter to understand the full depth of what God had shown him. This direct revelatory authority distinguishes the Unification source hierarchy from all others: at its apex is not a council, not a tradition, not a text, but the living, personal encounter between God and the one He called to reveal His heart.

Section IV — Branches of Unification Theology

Conventional theology is subdivided into biblical, historical, systematic, apologetic, and moral branches — as the existing article correctly notes. Each of these branches has a counterpart in Unification theological work, though each is reconfigured by the Unification framework.

Biblical Theology in the Unification context means the reading of both testaments through the lens of the Providence of Restoration — the interpretive framework that identifies the trajectory from Adam through the patriarchs and prophets, through Jesus, toward the Second Advent. This reading departs significantly from both Catholic and Protestant biblical theology by holding that Jesus' mission was not completed at the cross, and that the New Testament canon points forward toward a further revelation rather than constituting a closed and final word.

Historical Theology in the Unification context is the application of the Principle's understanding of providential history to the entire sweep of Christian and world religious thought. Key milestones in this history — Nicaea, the Reformation, the Enlightenment, the missionary movement, the ecumenical movement — are read as stages in the progressive preparation for the Completed Testament Age.

Systematic Theology finds its fullest Unification expression in the Divine Principle itself, which covers the major loci of systematic theology (doctrine of God, anthropology, hamartiology, Christology, soteriology, eschatology) within the coherent framework of the Principle of Creation and the Providence of Restoration. Young Oon Kim's Unification Theology and Christian Thought (1975) was the first attempt to present this systematic content in dialogue with mainstream Christian systematics.

Apologetic Theology — the defense and commendation of the faith in dialogue with critics — has been central to the Unification movement since its earliest engagement with the Western academic world. The founding of the New Ecumenical Research Association (New ERA) in the 1980s, which brought theologians from all traditions into dialogue with Unification thinkers, represents the movement's most sustained institutional expression of this apologetic vocation.

Moral and Practical Theology in the Unification context is inseparable from the movement's practice: the Blessing Ceremony, Hoon Dok Hae, and the Tribal Messiah mission. The ethical and practical dimensions of Unification theology are not a separate academic sub-discipline but the living expression of the Principle in the daily life of Blessed Families.

Section V — Theology and Unification Thought: The Two Wings

One of the most intellectually significant features of the Unification intellectual tradition is its insistence that theology alone is insufficient — that the Principle requires both a theological articulation and a philosophical one, and that these two are complementary rather than competing dimensions of the same truth.

Theology (신학, Sinhak) addresses the specifically religious questions: Who is God? What is humanity's relationship to God? What went wrong? How is it being restored? It draws on revelation, scripture, and tradition as its primary sources, and it speaks to the community of faith in the language of that community.

Unification Thought (통일사상, Tongilsasang), as systematized by Sang-hun Lee beginning in the early 1970s under Rev. Moon's direction, addresses the philosophical questions that theological language cannot easily reach: What is the nature of being? How do we know? What is the basis of value? What is the structure of history? It engages the full range of Western and Eastern philosophical traditions on their own terms, showing how the Principle provides answers to questions that philosophy has struggled with for millennia.

Sang-hun Lee himself described the relationship clearly in the Preface to his major work: Unification Thought is “the thought of God” — not merely human reflection on religious experience but the systematic philosophical expression of the same Principle that theology expresses in the language of revelation. Theology and Unification Thought are thus “the two wings” of the same intellectual bird: neither can fly without the other, and together they constitute a complete account of God, humanity, and the cosmos.

The specific philosophical grounding that Unification Thought provides strengthens Unification theology in three ways. First, it anchors the theological concepts — God's love, the Four-Position Foundation, the Providence of Restoration — in a rigorous ontological framework (Theory of the Original Image, Theory of Being) that gives them philosophical coherence as well as theological meaning. Second, it engages secular philosophy directly, showing that the Principle is not a sectarian religious claim but a universal truth accessible to rational inquiry. Third, it extends the reach of Unification thought beyond the boundaries of any single religious tradition into the broad interdisciplinary domain where theology, philosophy, science, and social theory converge.

Section VI — Unification Theology in Dialogue

From its emergence in the Korean religious landscape of the 1940s and 1950s, Unification theology has been defined in part by its engagement with other theological traditions — absorbing what it recognized as genuine, departing where the Principle required departure, and proposing what it believed to be more complete.

With Evangelical Christianity: The movement's origins were in a Korean Christian context shaped by Protestant revivalism and Pentecostalism. Rev. Moon's early followers were drawn largely from Methodist and Presbyterian backgrounds. The Unification engagement with Evangelical Christianity has centered on shared commitments (the authority of Scripture, the centrality of Christ, the coming Kingdom) while departing on Christology (Jesus as the Son of God but not God Himself), soteriology (the Blessing rather than faith alone), and eschatology (the Second Advent already realized).

With Liberal and Process Theology: The Unification teaching on God's passibility — that God can grieve, long, and be wounded by the Fall — resonates strongly with process theology's rejection of classical divine impassibility. Alfred North Whitehead's concept of God as the “fellow sufferer who understands” finds a deep parallel in Rev. Moon's sustained meditation on God's han (恨, unresolved grief). At the same time, Unification theology departs from process theology's naturalistic ontology: God is not simply the most eminent actual entity in a universe of becoming but the personal Creator whose Heart is the source of all love.

With Korean Minjung Theology: The Korean theological tradition of Minjung (민중, the suffering people) theology, which emerged in the 1970s and 1980s in response to the Korean military dictatorship, shares with Unification theology a deep engagement with Korean cultural categories — particularly han — and a conviction that the suffering of the Korean people has cosmic providential significance. The two movements diverged sharply, however, on the question of political engagement: Minjung theology aligned with democratic socialism and popular resistance, while Unification theology aligned with anti-communism and the Headwing transcendence of left-right politics.

With Liberation Theology: Latin American liberation theology's insistence that God has a “preferential option for the poor” and that the Kingdom of God must be realized in concrete social transformation resonates with certain dimensions of Unification theology — particularly its vision of a world of peace and the equal dignity of all human beings. The difference is in the mechanism: liberation theology tends toward political revolution as the path to the Kingdom, while Unification theology insists that the Kingdom can only be built on the foundation of restored families and the change of lineage through True Parents.

Section VII — The Question of Theological Authority

One of the most structurally significant questions in Unification theology concerns authority: who has the right to declare what the Principle teaches, and how is that authority validated?

In Catholic theology, authority is conciliar and papal — grounded in the teaching office (Magisterium) of the Church. In Protestant theology, authority is primarily scriptural — sola scriptura, with individual conscience as the final interpreter. In Orthodox theology, authority is the living tradition of the Church, preserved through the consensus of the Fathers and the ecumenical councils.

Unification theology operates on a different principle. The highest theological authority is the living word of True Parents — the direct, ongoing revelation of God's heart through those who stand in the position of the original, unfallen Adam and Eve. Below this stands the Divine Principle as the systematic expression of that living word. Below this stand the CSG and CBG as thematic and biographical compilations. Below this stand the world's scriptures as preparatory vehicles of partial truth.

This structure has a significant implication: Unification theology cannot be reduced to a fixed doctrinal system to be interpreted by academically trained specialists. It is a living tradition whose authoritative center is relational rather than institutional — connected always to the ongoing presence and word of True Parents and, after Rev. Moon's Seunghwa in 2012, to the continuing guidance of True Mother and the institutional structures she leads.

Section VIII — Key Figures in Unification Theological History

Hyo Won Eu (1916–1970) — the first president of the Unification Church of Korea and the primary systematizer of the Divine Principle. Eu worked for years under Rev. Moon's direct guidance to prepare the Korean text of Wolli Kangron (1966). His contribution was to give systematic, ordered form to teachings that Rev. Moon conveyed with great fluency but without systematic presentation.

Young Oon Kim (1915–1989) — the movement's first academic theologian in the Western sense, whose Unification Theology and Christian Thought (1975) placed Unification teaching in dialogue with the mainstream Western theological tradition for the first time. Kim's work was the foundational text of the Unification Theological Seminary curriculum.

Sang-hun Lee (1914–1997) — the primary systematizer of Unification Thought, whose Explaining Unification Thought (1981, translated into English from Korean) built the philosophical architecture that grounds Unification theology in a comprehensive theory of being, value, and history. Lee's work is accessible through uthought.org.

Sebastian Matczak (1923–2010) — a Polish-American philosopher and theologian who wrote Unificationism: A New Philosophy and Worldview (1982), the first sympathetic treatment of the movement's philosophical claims by an academic from outside the movement.

Lloyd Eby and Jonathan Wells — philosophers associated with the Washington Institute for Values in Public Policy, who contributed to the systematic philosophical engagement between Unification Thought and Western academic philosophy.

Section IX — Unification Theology in New Religious Movement Scholarship

Academic study of Unification theology as a theological enterprise — as distinct from sociological study of the movement — developed primarily through the dialogue series sponsored by the New Ecumenical Research Association (New ERA) from the early 1980s onward. These conferences, which brought together scholars from Reformed, Catholic, Orthodox, and Buddhist backgrounds, produced a series of dialogue volumes including Exploring Unification Theology (1978), Hermeneutics and Unification Theology (1980), and Unification Theology in Comparative Perspectives (1988).

Scholars who engaged the theology seriously rather than dismissively — including Frederick Sontag, Herbert Richardson, and Darroll Bryant — consistently identified three features as most theologically distinctive: the teaching on the incompleteness of Jesus' mission, the claim that True Parents have come as the fulfillment of what Jesus left unfinished, and the universalist claim that the Principle encompasses the truths of all world religions.

The founding of the Journal of Unification Studies in 1997 marked the movement's institutional commitment to ongoing academic theological reflection. More recent scholarship, in journals such as Nova Religio, has examined how Unification theology has evolved in the post-2012 period — particularly how questions of doctrinal authority and continuity are being negotiated within the movement as it moves from the era of the founder into the era of institutional consolidation.

Key Texts on tplegacy.net

Introduction — Exposition of the Divine Principle — the foundational statement of Unification theological method and the critique of accumulated doctrinal tradition

Preface — Exposition of the Divine Principle — the account of how the Divine Principle was prepared and its relationship to Rev. Moon's revelatory authority

The Exposition of the Divine Principle — the primary theological text

Cheon Seong Gyeong — thematic compilation of Rev. Moon's teaching as secondary canonical source

Sermons of Rev. Moon — the living word that contextualizes the Divine Principle