When Moses boldly requested, “Please show me your glory” (Exodus 33:18), he voiced a longing that resonates through every human heart—the desire to truly know God. Yet God’s response reveals a profound tension: He would show Moses His goodness while declaring, “you cannot see my face, for man shall not see me and live” (Exodus 33:20). This exchange introduces us to one of theology’s most important yet often misunderstood doctrines: the incomprehensibility of God.

Can we really know God? The Reformed tradition’s answer is both humbling and hopeful: we cannot know God exhaustively, but we can know Him truly through His gracious self-revelation.

WHAT INCOMPREHENSIBILITY DOES NOT MEAN

Before we grasp what this doctrine affirms, we must clear away a common misconception. When we speak of God’s incomprehensibility, we do not mean we cannot know anything about God. This would reduce Christianity to a form of religious agnosticism, making all God-talk meaningless and worship impossible.

Scripture itself refutes such scepticism. Moses wrote, “The secret things belong to the LORD our God, but the things that are revealed belong to us and to our children forever” (Deuteronomy 29:29). Notice the balance: sure, there are secrets beyond our grasp, but there are also revealed truths that belong to us. God has not left us in the dark, groping blindly for some unknowable deity. He has spoken. He has revealed Himself. Genuine knowledge of God is not only possible—it is the very foundation of the Christian life.

WHAT INCOMPREHENSIBILITY DOES MEAN

Here we arrive at the heart of the doctrine. God’s incomprehensibility means we cannot know Him comprehensively or exhaustively. The reason is simple yet profound: God is infinite and we’re finite. Think of it this way: we can stand at the ocean’s edge and truly experience the sea—feel its spray, taste its salt, marvel at its depths. But we cannot exhaust the ocean. We cannot hold it all in our hands or contain it in our minds. Similarly, we can genuinely know God without comprehending the full extent of His being.

The Reformed tradition has historically expressed this truth through the Latin principle finitum non capax infiniti—”the finite cannot grasp the infinite.” This isn’t a philosophical abstraction divorced from Scripture; it’s simply recognition of what the Bible everywhere assumes. When Isaiah declares, “For my thoughts are not your thoughts, neither are your ways my ways, declares the LORD. For as the heavens are higher than the earth, so are my ways higher than your ways and my thoughts than your thoughts” (Isaiah 55:8-9), he’s acknowledging this infinite distance.

The apostle Paul, having traced God’s magnificent plan of redemption through 11 chapters of Romans, bursts into doxology: “Oh, the depth of the riches and wisdom and knowledge of God! How unsearchable are his judgments and how inscrutable his ways! For who has known the mind of the Lord, or who has been his counsellor?” (Romans 11:33-34). The psalmist echoes this wonder: “Great is the LORD, and greatly to be praised, and his greatness is unsearchable” (Psalm 145:3). Even Job, after demanding answers from God, is humbled by the divine questions: “Can you find out the deep things of God? Can you find out the limit of the Almighty?” (Job 11:7).

This is not God playing hide-and-seek or withholding Himself arbitrarily. It’s the necessary reality that exists when the Infinite encounters the finite, when the Eternal stoops to teach the temporal, when Being itself addresses creatures whose existence is derived and dependent.

HOW WE KNOW THE INCOMPREHENSIBLE GOD

So how do we bridge this seemingly impossible gap? We don’t. God does.

This is where the doctrine becomes gloriously practical. John Calvin spoke of God’s “accommodation”—God graciously condescends to our level, speaking to us in what Calvin called “baby talk” so our finite capacities can grasp truth about Him. Just as a loving parent doesn’t speak to a toddler in technical philosophical language but stoops down and uses simple words the child can understand, so God adapts His infinite reality to our finite minds.

God reveals Himself through two primary means.

First, through general revelation—the created order itself testifies to God’s “eternal power and divine nature” (Romans 1:20). The heavens declare God’s glory; the universe bears His fingerprints.

Second, and more fully, through special revelation—Scripture and supremely in Jesus Christ. The writer of Hebrews announces, “Long ago, at many times and in many ways, God spoke to our fathers by the prophets, but in these last days he has spoken to us by his Son” (Hebrews 1:1-2). John’s Gospel proclaims that “the Word became flesh and dwelt among us, and we have seen his glory” (John 1:14), and concludes that “No one has ever seen God; the only God, who is at the Father’s side, he has made him known” (John 1:18).

Our language about God works through analogy—we can say what God is like without exhausting His essence. When Scripture tells us God has “hands” (1 Samuel 5:11) or “eyes” (Job 28:10) or sits on a “throne” (1 Kings 22:19), we understand these are accommodated terms. God doesn’t literally possess physical features, but He truly acts, sees, and reigns. The language is childlike, but the truth it conveys is real and reliable.

LIVING WITH HOLY MYSTERY

What difference should this doctrine make in our daily walk with God?

• It cultivates theological humility. We must be willing to say “I don’t know” when Scripture doesn’t speak clearly. The doctrine of the Trinity stands as a perfect example—we confess one God in three persons not because we can fully comprehend it, but because God has revealed it. The mystery remains, and that’s acceptable.
• It deepens our worship. God’s infinite greatness doesn’t discourage us from seeking Him; rather, it allures us to gaze more intently at His glory. Every glimpse we gain reveals there is infinitely more to discover. The great Reformed theologian Herman Bavinck captured this beautifully: “It is completely incomprehensible to us how God can reveal himself and to some extent make himself known in created beings… This mystery cannot be comprehended; it can only be gratefully acknowledged.”
• It ensures ongoing dependence. We never graduate beyond our need for Scripture, prayer, and the church. Throughout eternity itself, there will always be more of God to marvel at, new depths of His love to explore, fresh dimensions of His wisdom to contemplate.

CONCLUSION: THE GOD WHO IS NEAR AND FAR

Can we really know God? Yes—we can know Him truly, savingly, transformingly. But exhaustively? No, and that’s part of His glory. The incomprehensibility of God doesn’t distance us from Him; rather, it magnifies the wonder that this infinite, unfathomable God has drawn near to us in Christ.

We return to Moses at Sinai, but now we see the fuller story. God did show Moses His glory—as much as Moses could bear and live. And centuries later, God would reveal His glory definitively in the face of Jesus Christ. In Him, the infinite became finite without ceasing to be infinite, the transcendent became immanent without compromising His transcendence.

This is the beautiful paradox of the Christian faith: the God we can never fully comprehend has made Himself known in ways we can truly understand. And so we walk forward in faith, not frustrated by mystery but drawn deeper into worship. We do so knowing we serve a God whose greatness exceeds our grasp—yet whose love reaches down to hold us fast.

RELATED FAQs:

• What’s the difference between God’s knowledge of Himself and our knowledge of God? Reformed theologians make a crucial distinction: God knows Himself perfectly, exhaustively, and infinitely—this is the “original” knowledge that exists within God’s own mind. Our knowledge of God, by contrast, is real and true but always finite, limited, and dependent on what God chooses to reveal to us. This distinction protects us from two dangerous errors: thinking we can know God as completely as He knows Himself (which leads to arrogance), or thinking we can’t truly know anything about God at all (which leads to despair). Even in heaven, when we see God face to face, our knowledge will be vastly greater but still finite—because creatures by definition cannot possess infinite understanding.
• How does the Reformed view differ from Eastern Orthodox theology on this doctrine? Both Reformed and Eastern Orthodox Christians affirm God is incomprehensible, but they emphasise different aspects. Orthodox theology, especially in writers like Gregory of Nyssa, tends to stress knowing God mainly through negation—focusing on what God is not rather than what God is—and often elevates mystical experience above the truths found in Scripture. Reformed theology insists that while negative statements about God are valuable, God has graciously communicated truth about Himself in human language through Scripture, and we can make genuinely positive statements that are really true. The Reformed approach maintains God’s accommodation to our understanding means biblical revelation gives us solid ground to stand on, not just shadows and silence. We need not choose between God’s transcendence and His knowability—He is both utterly beyond us and mercifully near to us in Christ.
• Does incomprehensibility mean the Trinity is irrational or contradictory? No—there’s a vital difference between mystery and contradiction. A contradiction would be claiming that God is simultaneously one person and three persons in the same sense, which would be logically impossible. But the Trinity is a mystery: one God existing eternally as three distinct persons (Father, Son, and Holy Spirit) is something that surpasses our complete understanding without being logically incoherent. Scripture reveals both God’s oneness and His threeness without explaining exhaustively how this works. And Reformed theology simply confesses what God has revealed while humbly acknowledging that the inner workings of God’s eternal life exceed our finite minds. This incomprehensibility doesn’t excuse us from thinking carefully about God; rather, it invites us to worship the God whose glory transcends our grasp while we faithfully believe what He’s made known.

If God is incomprehensible, how can we do theology systematically? Systematic theology is possible—and necessary—precisely because God has revealed Himself clearly in Scripture. We’re not claiming to map out every detail of God’s infinite mind; rather, we’re organising and relating the truths God has actually revealed in ways that help us understand them better and see how they fit together. Think of it like assembling a puzzle: we can’t see the whole picture with perfect clarity, but we can faithfully arrange the pieces God has given us. Reformed theology proceeds with both confidence (God’s Word is trustworthy and sufficient for faith and life) and humility (we won’t have every question answered this side of eternity). The doctrine of incomprehensibility doesn’t paralyse theological work—it actually liberates us from the impossible burden of knowing everything while maintaining confidence in what God has graciously revealed.

• Will we finally understand God completely in heaven? Even in heaven, God will remain incomprehensible to us—but this is actually wonderful news, not disappointing. In glory, our knowledge of God will be immeasurably greater than it is now: clearer, more direct, unhindered by sin, and filled with joy beyond imagination. Yet we will never possess infinite comprehension because creatures, even glorified ones, cannot become infinite. This means that throughout all eternity, there will always be more of God to discover, deeper dimensions of His love to explore, and fresh reasons to worship Him. Far from making heaven boring, this ensures it will be an endless, joyful adventure of knowing the inexhaustible God—always satisfied yet never exhausted, always full yet always finding more.
• How does this doctrine affect how we read and interpret the Bible? God’s incomprehensibility calls us to approach Scripture with both confidence and humility. We can be confident that the Bible clearly reveals everything we need for salvation and living faithfully—God has not left us in the dark about what matters most. At the same time, we must humbly acknowledge that some passages and doctrines contain mysteries we won’t fully resolve this side of heaven, like how Christ can be fully God and fully man, or how God’s sovereignty and human responsibility work together. This doctrine never justifies sloppy interpretation or claiming that Scripture means whatever we want it to mean. Rather, it calls us to carefully study what God has revealed while resisting the temptation to force false clarity on mysteries God has chosen to leave veiled. We can say “Scripture clearly teaches both X and Y, though how they fully relate remains mysterious” without compromising biblical authority.

How does this doctrine impact evangelism and sharing our faith? Understanding that God is incomprehensible profoundly shapes how we share the gospel. It means we can’t “prove” God to unbelievers by starting from supposedly neutral human reason, as if God were just the conclusion of a logical argument. Instead, we recognise that all knowledge, reason, and science actually depend on the God who reveals Himself in Scripture—a God whose wisdom infinitely surpasses human understanding. This gives us both boldness and humility in evangelism: we can confidently proclaim Christ based on God’s trustworthy self-revelation, while honestly admitting we don’t have neat answers to every theological question. We can say to seekers, “I don’t understand how all this works, but I know the One I’ve believed in, and He’s proven Himself faithful.” Faith rests on God’s reliable word to us, not on our ability to comprehend everything about Him—and that’s actually liberating for both believer and unbeliever alike.

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