What is God? — A Trinity Sermon

Abbey at Conques on Le Chemin de St. Jacques de Compostelle, France (Jim Friedrich)

What is God? When the biblical Jews asked that question, they responded from their experience of salvation history.  God is the one who told me to leave behind everything I knew and set out for God-knows-where, says Abraham. God is the one who asked me to go back to the land of oppression and enslavement so I could speak truth to power, says Moses. God is the one who made a covenant with us on Mount Sinai, in the cloud of unknowing. God is the one who remembered us in the days of exile. God is the one who brought us home from Babylon. 

Then Jesus came along, and even though he lived and died as a human being, there were those who experienced the fullness of God in the unique particularity of his life, death, and resurrection. The risen Lord, who said “I am with you always,” would become an object of worship very early in the life of the Church. 

And after the Ascension of Jesus came the Holy Spirit, not only as an indwelling presence but also as a radically transformative force, in whom divine fullness was equally and uniquely manifest.  

For the early Christians, then, the One they called God had been revealed to have three distinct ways of being: Source, Savior, and Spirit. Love who loves us; Word who saves us; Spirit who renews us. And before long they were offering worship not only to the God of Israel, but to Jesus and the Holy Spirit as well. 

They were not polytheists. They rejected pagan notions of a heaven and earth populated by competing deities. But their experiences of God in Christ and God in the Spirit were unique enough to differentiate them from the Holy One who sent Jesus into the world. 

At the same time, the second and third Persons were not understood to be partial or lesser versions of God. Only the true God can save us, as Christ did. Only the true God can sanctify us, as the Spirit does. 

Those first Christians couldn’t deny their experience, or the witness of Scripture. Christ was God. The Spirit was God. But that posed a conceptual problem. 

How can the Three be One? How can the One be Three? Mathematics or logic can’t solve this puzzle. Several centuries of ecumenical councils struggled with the questions, doing their best to preserve the paradox of Three in One and One in Three from collapsing into the simplicity of God as “One is One and all alone.” 

Although it would have put a lot of theologians out of work, It would have been a lot easier just to stick with the Oneness. But that would not have been true to Christian experience. The Threeness is essential to our informed—and formative—encounters with God. As contemporary Catholic theologian Catherine LaCugna puts it, “The doctrine of the Trinity is ultimately a practical doctrine with radical consequences for Christian life.” [1]

Does that mean that the friends of God have to master the bewildering terminology and complicated nuances of ancient dogma in order to live the Christian life? Will heaven admit only the most sophisticated thinkers? Let’s hope not. 

I’ve read a lot of theology and Church history over the last fifty years, and I still have trouble remembering the differences between Monophysites, Monothelites, Monarchians, Modalists, Ebionites and Sabellians. As Japanese theologian Kosuke Koyama wonders, what if we were to exchange the metaphysical tangles of the West for more down-to-earth analogies. For example, he asks, what might the yin-yang of “pepper” and “salt” tell us about the divine nature? [2] Or St. Patrick’s shamrock, for that matter. 

For the Offertory anthem at the liturgy for Trinity Sunday, Mozart’s Laudate Dominum, I’ve assembled 26 concrete images of persons and objects grouped in threes. As you watch the video, I invite you to contemplate the Christian koan of Three-in-One and One-in-Three. 

Now then, what shall we say about the Trinity? One of the sixteenth-century reformers counseled intellectual modesty. “We adore the mysteries of the Godhead,” he said. “That is better than to investigate them.” [3] In a similar vein, a contemporary theologian reminds us that the “triune God is not simply unknown, but positively known to be unknown and unknowable—which is a dear and profound knowledge.” [4]

But on Trinity Sunday, it is the preacher’s ritual duty to offer a sacrifice of ignorance on the altar of unknowing. So here we go.

Back in the day—the fourth century, that is—when the Council of Nicaea was parsing theories of the divine life, theology was a popular sport, and people kicked around trinitarian doctrines the way some of us recite the arcane numbers of baseball metrics today. But in the late Middle Ages, the doctrine of the Holy Trinity went into cold storage. By the time of the Enlightenment, Immanuel Kant could say that Trinitarian theology had “no practical relevance at all, even if we think we understand it.” [5]

In recent centuries, any sort of God talk has been drained of content for many people. We live in a secular age, where a divine power who is in but not of the world has become increasingly unthinkable. Religion, in the world’s eyes, has become more of a private matter than a public truth. 

And yet, the Spirit continues to work, and in the last few decades we have seen a remarkable resurgence of attention and thought devoted to the meaning and relevance of the Trinity. It’s not just white, western males doing this work. Feminists, Africans, Asians, Middle Easterners and Latin Americans are all bringing fresh and urgent perspectives to Christianity’s core doctrine of God. And their work is of enormous consequence for both our personal faith and our common life.

The Nicene Creed declares that the three Persons are “of one substance.” In other words, whatever God is made of, Father, Son, and Holy Spirit have all got it—and in equal measure. 

But what is that “substance?” Is it a divine essence which existed prior to, or in addition to, the Persons themselves? Is there a one God hidden behind or beyond the Trinity? Such a notion would undercut the completeness of the Trinity, making it dependent on something external—in other words, less than fully divine in itself. 

Or is the divine substance like a pie which has been cut into three equal pieces? That would divide God into parts and lose the unity of the whole. It would also make the Persons less than eternal, since the whole pie would have to precede the creation of the separate pieces. 

But what if we were to give up the idea of divine “substance” as some kind of stuff which exists on its own and gets divided into three, or possesses a reality in addition to whatever the three Persons consist of? What if being the divine Trinity does not mean to have a divine substance, a kind of primordial stuff. What if being a Trinity means to be in relation with one another? 

Perhaps the Trinitarian God is best described not as a fixed, objective entity, but as an event or activity, an eternal communion shared between the Persons. The Greek word perichoresisdescribes the divine communion as a dance where the partners are in continuous motion, weaving in and out of one another. 

This conceptual shift from substance to relation is a central theme of contemporary theology. As feminist theologian Elizabeth Johnson writes (using inclusive terms for the Persons):

“The mutual coinherence, the dancing around together of Spirit, Wisdom and Mother; or of mutual Love, Love from Love, and unoriginate Love; or of the three divine persons – this defines who God is as God. There is no divine nature as a fourth thing that grounds divine unity in difference apart from relationality. Rather, being in communion constitutes God’s very essence.” [6]

A couple of British theologians elaborate this point when they say that the divine Persons do not “exist over against the others as self-enclosed centers of consciousness, as with human persons … but rather each dwells in the other through a kind of inter-permeation.” Then they sum it up this way: “The consciousnesses are fused but not confused.” [7]

This is not a new idea. The First Epistle of John assures us that “God is love” (4:8). And love, as we all know, cannot exist alone, without an “other” to share with, give to, receive from. Love exists only by going beyond the self in a process of perpetual self-offering.

Love is not a secondary or optional property of God. Love is who God is, and how God exists. Simply put: “the Trinity is not derived from God’s essence; the Trinity is God’s essence.” The communion and community of the Persons is God’s nature and essence.” [8]

Jürgen Moltmann notes the impossibility of a loving God being otherwise. “God cannot find bliss in eternal self-love,” he writes, “if selflessness is part of love’s very nature. God is in all eternity self-communicating love.” [9] A Kenyan Christian, John Mbiti, who comes from a more communal culture, puts this even more succinctly:

“I am because we are, and since we are, therefore I am.”[10]

We may struggle with this interdependent Trinitarian model because our culture has taught us to think of a person as an autonomous individual, whose identity, mind and will are separate and independent from every other person. 

But what the doctrine of the Trinity tells us is that you cannot be a person alone. You can only be a person in relationship with others. Addressing another, listening to another, conversing with another, loving one another, offering ourselves to one another—these are the means of becoming a person and existing as a person, if we are to live in the image of the relational personhood of the divine, in whom the one does not exist without the many. 

When we hear Jesus say, you must lose yourself to find yourself,[11] we may think he’s speaking of death, either metaphorical or physical, some kind of painful stripping away. And sometimes that is the case. 

But I think Jesus is also describing the divinely grounded process of communion and community. “I am because we are, and since we are, therefore I am.” St. Athanasius had a wonderful term for this state of being in communion. He called it “reciprocal delight.”[12]  We are all in this together, God says, and so say God’s friends as well.  

It seems especially fitting at this particular moment to contemplate communion as the essential and constitutive fact of divine life, for in one week’s time we will gather together, in person at last, as the Body of Christ at St. Barnabas. It has been fourteen months since we last did this. What joy it will be to share the sacrament of God’s self-diffusive love once again and celebrate the bonds between us.

After so many words about the Holy Trinity, let me conclude with an image. Thirty years ago, Polish film director Krzysztof Kieslowski made a series of 10 one-hour films called Decalogue. Each of the films is based on one of the Ten Commandments, and the series is one of the masterpieces of spiritual cinema. [13]

Pawel (Wojciech Klata), Decalogue 1

In the first film, there’s an exchange between Pawel, an eleven-year-old boy, and his aunt Irena. Pawel has a great curiosity about God, which his single-parent father, an unbeliever, cannot satisfy. So Pawel takes his questions to Irena, his devout Catholic aunt: 

Pawel: Do you believe that God exists?
Irena:  Yes.
Pawel: What is God?

Irena doesn’t answer with words. 
Instead, she puts her arms around Pawel and pulls him close.

Irena:  What do you feel now?
Pawel: I love you.
Irena:   Exactly. That’s what God is.



[1] Catherine M. LaCugna, cited in Veli-Matti Kärkkäinen, The Trinity: Global Perspectives (Louisville, KY: Westminster ]ohn Knox Press, 2007), 179.. This is the opening sentence of LaCugna’s God for Us: The Trinity and Christian Life (1991). As you will see, I found Kärkkäinen’s study of recent Trinitarian theology to be an invaluable resource. 

[2] Veli-Matti Kärkkäinen, 312.

[3] Philip Melanchthon, in Veli-Matti Kärkkäinen, xvi.

[4] Elizabeth Johnson, in Veli-Matti Kärkkäinen, 212, from Johnson’s She Who Is: The Mystery of God in Feminist Theological Discourse(1993).

[5] Immanuel Kant, in Veli-Matti Kärkkäinen, 206.

[6] Elizabeth Johnson, in Veli-Matti Kärkkäinen, 56.

[7] Ninian Smart & Steven Konstantine, in Veli-Matti Kärkkäinen, 249, from their Christian Systematic Theology: Theology in a World Context (1991).

[8] Richard Rice, in Veli-Matti Kärkkäinen, 140.

[9] Jurgen Moltmann, in Veli-Matti Kärkkäinen,106;  from Moltmann’s classic Trinity and the Kingdom: The Doctrine of God (1981)

[10] John Mbiti, in Veli-Matti Kärkkäinen, 352.

[11] Matthew 10:38.

[12] St. Athanasius (c. 296-373), a bishop in Roman Egypt, was a key defender of Trinitarianism. Cited in in Veli-Matti Kärkkäinen, 39.

[13] See my post, Kieslowski’s Decalogue: A Masterpiece of Religious Cinema (Jan. 28, 2017): https://jimfriedrich.com/2017/01/28/kieslowskis-decalogue-a-masterpiece-of-religious-cinema/

The Spirit That Moves Us All: A Pentecost Reflection

Piero di Cosimo, Incarnation (detail), 1500-1505. “Holy Ghost over the bent / World broods with warm breast and with ah! bright wings.” (Gerard Manley Hopkins)

In spite of all the destructive forces [we] let loose against life on this planet, the Spirit of Life is at work in ever new and unforeseeable ways, countering and circumventing the obstacles we put in its path. In spite of my strong tendencies to complacency and despair, I experience the Spirit in myself as calling forth the realistic hope apart from which there is no hope, and I am confident that what I find in myself is occurring in others also … what makes for life and love and hope is not simply the decision of one individual or another but a Spirit that moves us all. 

— John Cobb [1]

Of perfect love thou art the ghostly flame.
Emperor of meekness, peace and tranquility,
My comfort, my counsel, my perfect charity,
O water of life, O well of consolation,
Against all storms of hard adversity …

— 15th century English lyric 

On the fiftieth day of Easter, our liturgical prayer addresses the Holy Spirit more than on any other day. Most of the time our words of supplication and praise address an “other” who is metaphorically outside or beyond: God, Jesus, Father, Mother …. But the dominant prayer of Pentecost calls upon the most obscure and elusive of the divine “Persons”—One who is not “out there” but “in here.”

Veni Sancte Spiritus. Come, Holy Spirit.

The tricky thing about such a prayer is that it is not prayed to the Spirit. It is prayed in the Spirit and by the Spirit. The Spirit is not the object of our prayers, but the subject, dwelling within our inmost parts more surely and substantially than the transitory, constructed “I” produced by the particular confluence of history, biology, and personality which has sculpted our individuality over time. When truth speaks through us, when our energies are directed toward the well-being of all, when our lives are written and rewritten as narratives of divine love, the Spirit isn’t just in us—the Spirit is us. 

This is to claim nothing for ourselves. Only those driven by unholy spirits make that mistake. Participation in the divine reality—life “in the Spirit”—is always a matter of giving yourself away, becoming part of something larger. The Holy Spirit’s proper name is communion. When we’re in the Spirit, that’s our name too.  

Compared to writings about “God” and “Christ,” theological expositions on the Holy Spirit can seem relatively thin. The early creeds didn’t have much to say either, making the Spirit seem like an afterthought—oh yeah, and the Holy Spirit too. But this isn’t due to neglect so much as it is to the Spirit’s way of disappearing into the world as anonymous giftedness. As Orthodox theologian Vladimir Lossky put it: 

“[T]he Holy Spirit effaces himself, as Person, before the created persons to whom he appropriates grace … He mysteriously identifies himself with human persons while remaining incommunicable. He substitutes Himself, so to speak, for ourselves.” [2]

Canadian poet Margaret Avison addresses the Spirit’s indescribability in her poem “… Person or A Hymn on and to the Holy Ghost.” 

How should I find speech 
to you, the self-effacing
whose other self was seen
alone by the only one,

to you whose self-knowing
is perfect, known to him,
seeing him only, loving
with him, yourself unseen?

Let the one you show me
ask you, for me,
you, all but lost in
the one in three,

to lead my self, effaced
in the known Light,
to be in him released 
from facelessness,

so that where you 
(unseen, unguessed, liable
to grievous hurt) would go
I may show him visible.

The poem’s profusion of pronouns makes it hard, at first, to tell which divine Person is doing what. “You” is clearly the Holy Spirit, but who is “him?” Is it Christ, or the Father, or God in general who releases us from “facelessness,” or whom we ourselves make visible in the practice of holy living? The “unseen, unguessed” Spirit may be “all but lost in / the one in three,” but without it (or him, or her, or they), Love Divine could not do its proper work in the world and in the heart.

O fiery Spirit, come burn in us.
O sacred breath, come breathe in us.
O blazing love, come flame in us.…
O delight of life, come live in us. [3]

This past year has generated its share of anxiety, fear, madness and grief, but as John Cobb reminds us, “the Spirit of Life is at work in ever new and unforeseeable ways, countering and circumventing the obstacles we put in its path.” It is in this Spirit that I have shaped my retelling of Ezekiel’s vision in the Valley of Dry Bones (see video below). When the divine breath comes into the lifeless bodies, I layer multiple inhalations and exhalations to make a chorus of breaths. For me that collective sound symbolizes the Spirit’s fierce resistance to every power that would silence and choke us. As the Psalmist says, You send forth your Spirit, and the people are created; and so you renew the face of the earth (Psalm 104:31).


[1] Cited in Marjorie Suchocki, “Spirit in and through the World,” in Suchocki and Joseph A. Bracken, S.J., Trinity in Process: A Relational Theology of God (New York: Continuum, 1997), 180. And yes, masculine pronouns are problematic. Depending on the language, Spirit has been feminine and neuter as well. Do you think She minds?

[2] Vladimir Lossky cited in Paul S. Fiddes, Participating in God: A Pastoral Doctrine of the Trinity (Louisville, KY: Westminster John Knox Press, 200), 261.

[3] Jody L. Caldwell, after Hildegard of Bingen, in Voices Found (New York: Church Publishing, 2003), #62.