Reforming Apologetics

1. The divine library consists of two essential books: Nature and Scripture

But at the same time, my aim is to draw the church’s attention back to the book of nature, so that we can use both books—nature and Scripture—in the defense of the faith.

Two divine books. God reveals Himself through two distinct but complementary means: the book of nature (creation, preservation, and government of the universe) and the book of Scripture (the written Word). While Scripture holds interpretive priority and contains the saving knowledge of Christ, the book of nature remains a valid, objective revelation of God's eternal power and divine nature.

Complementary revelation. Early modern Reformed confessions, such as the Belgic and Gallican Confessions, explicitly likened the universe to a beautiful book whose creatures are letters spelling out God's glory. Natural theology, drawn from the order of nature, and supernatural theology, drawn from the order of grace, are both divinely revealed rather than humanly invented.

The modern neglect. In the twentieth century, a general distrust of natural theology led many Reformed theologians to leave the book of nature on the shelf to gather dust. This neglect unnecessarily weakens the church's defense of the faith by abandoning a vital tool of general revelation.

• The book of nature reveals God's power, wisdom, and goodness.
• The book of Scripture reveals Christ, grace, and salvation.
• Both books are authored by God and speak with one voice.

2. The "light of nature" is a vital, confessional Reformed category

The light of nature, therefore, includes common knowledge among believer and unbeliever that binds them to the same moral standards but leaves the unbeliever far short of true faith and saving knowledge.

Confessional foundation. The Westminster Confession of Faith repeatedly invokes the "light of nature" to describe natural law, human reason, and God's general revelation. This light manifests God's goodness, wisdom, and power sufficiently to leave fallen humanity without excuse, even though it cannot impart saving knowledge.

Reason and law. Westminster divine Anthony Burgess explained that the light of nature encompasses both the moral law written on the heart and the instrumental use of human reason. Even in a post-fall world, the light of nature serves as a moral guardrail, restraining sin and enabling civil society to function.

Instrumental reason. Reason is not the master of faith but its handmaid, helping believers to better comprehend and defend revealed truths. When sanctified by the Holy Spirit, reason becomes a powerful tool for analyzing the natural world and clarifying scriptural doctrines.

• The light of nature appears five times in the Westminster Confession.
• It provides general principles for ordering human society and worship.
• It acts as a passive qualification for receiving saving faith.

3. "Common notions" are the divinely inscribed points of contact in all humans

The Law of Nature consists in those common notions which are ingrafted in all men’s hearts.

Innate divine imprint. Common notions (koinai ennoiai) are the self-evident, practical principles that God has engraved upon the human conscience by virtue of the imago Dei. These include the basic awareness of God's existence and the fundamental distinction between moral right and wrong.

Exegetical anchor. This concept is anchored in Romans 2:14-15, where Paul describes Gentiles doing by nature what the law requires because the "work of the law" is written on their hearts. Reformed orthodoxy historically maintained that these innate principles remain as residual fragments after the fall, preventing total moral chaos.

Point of contact. Because all humans share these common notions, believers have an objective, divinely established point of contact when engaging with unbelievers. Apologists do not need to construct a neutral ground of bare logic; they simply appeal to what the unbeliever already internally knows but sinfully suppresses.

• Common notions are self-evident and do not require logical proof.
• They distinguish between primary principles (immutable) and secondary conclusions (corrupted by sin).
• They render all human beings inexcusable before the divine bar.

4. John Calvin historically embraced natural theology and traditional proofs

The Calvin of history employs both common notions and the scholastic method, and he presents his own versions of some of the traditional arguments for the existence of God.

The historical Calvin. Modern myths have painted John Calvin as a strictly Christocentric theologian who rejected natural theology and traditional proofs for God's existence. However, historical analysis reveals that Calvin stood in continuity with the medieval tradition, utilizing scholastic distinctions and natural law.

Nature as a mirror. Calvin argued that God has deposited a "seed of religion" (semen religionis) in every human mind and manifested His perfections in the theater of the universe. He frequently utilized the Stoic concept of prolēpsis (preconception) to explain how the natural knowledge of God functions.

Traditional arguments. In his commentaries and the Institutes, Calvin presented rhetorical versions of the cosmological and teleological arguments, tracing the creation back to its supreme Architect. He freely cited pagan philosophers like Cicero and Plato to show that natural reason can discern the Creator's handiwork.

• Calvin distinguished between the knowledge of God as Creator and God as Redeemer.
• He utilized the scholastic distinction between absolute and relative necessity.
• He maintained that the natural man is blind to heavenly things but capable in earthly sciences.

5. Thomas Aquinas was a theologian of faith, not a rationalist philosopher

The sole way to overcome an adversary of divine truth is from the authority of Scripture—an authority divinely confirmed by miracles.

Faith seeking understanding. Cornelius Van Til and other modern Reformed critics often caricature Thomas Aquinas as a rationalist who built his theology on autonomous human reason. In reality, Aquinas operated firmly within the Augustinian tradition of "faith seeking understanding," presupposing the absolute authority of divine revelation.

The role of the proofs. Aquinas's famous "Five Ways" were never intended to serve as an independent, rationalistic foundation for faith. Instead, they functioned within sacred doctrine as "preambles to faith," demonstrating that the existence of the God of Scripture is logically coherent and defensible.

Wounded reason. Aquinas did not believe human reason escaped the fall unscathed; he explicitly taught that original sin wounded human nature, leaving the intellect darkened and prone to error. He insisted that supernatural revelation is absolutely necessary for salvation because God's essence surpasses human comprehension.

• Aquinas's Summa Theologica begins with the necessity of sacred doctrine based on revelation.
• The "Five Ways" are a posteriori (from effect to cause) arguments.
• Reason acts as a handmaid (ancilla) to clarify and defend revealed truths.

6. Historic worldview theory introduces unbiblical, idealist assumptions

We must really do what Karl Barth has insisted that we must do but has not done, namely, start our interpretation of the whole of life von oben [from above].

Idealist origins. The modern concept of "worldview" (Weltanschauung) originated in nineteenth-century German idealism with Kant, Hegel, and Dilthey. It was later adapted by Christian theologians like James Orr, Abraham Kuyper, and Cornelius Van Til to present Christianity as a comprehensive, all-embracing life-system.

The problem of monism. Historic worldview theory is built on the idealist assumption that an entire system of thought must be deduced from a single, central principle. This monistic approach often leads to the claim that Christian and non-Christian worldviews are completely incommensurable, leaving no common ground of shared knowledge.

Scripture's limited scope. While the Bible has profound implications for all of life, it does not provide an exhaustive, encyclopedic explanation of every academic discipline. Forcing Scripture to serve as the sole foundation for all general knowledge denigrates the book of nature and ignores the valuable insights of common grace.

• Worldview theory was popularized in the Reformed world by Abraham Kuyper's Stone Lectures.
• It often overemphasizes the principle of absolute antithesis at the expense of common grace.
• The Bible's primary scope is to teach what man is to believe concerning God and his duty.

7. Transcendental arguments (TAG) must not replace the book of nature

There is no reason to assume, as Van Til does, that anyone who uses an argument from design or causality is presupposing a nontheistic epistemology.

The transcendental method. The Transcendental Argument for the existence of God (TAG) argues from the "impossibility of the contrary," claiming that the Triune God of Scripture is the necessary precondition for the intelligibility of all human experience, logic, and science. While TAG is a powerful tool, it has its roots in Kantian idealism and is often wedded to a coherence theory of truth.

The need for correspondence. Truth must not only systematically cohere within a worldview; it must also correspond to objective reality. Overemphasizing coherence at the expense of correspondence can lead to a subjective, circular apologetic that ignores the concrete, historical evidences of the Christian faith.

Complementary arguments. The TAG should not be used to banish traditional a posteriori arguments, such as the teleological or cosmological proofs. Instead, traditional proofs and historical evidences work in harmony with transcendental arguments to show that the Christian faith corresponds to the actual world God created.

• TAG was developed by Kant to refute Cartesian skepticism and adapted by Van Til for apologetics.
• A purely transcendental approach can lead to a neglect of historical and scientific evidences.
• The books of nature and Scripture speak with one voice, requiring both coherence and correspondence.

8. Distinguishing nature and grace is not a pagan dualism

Duality within created reality does not exclude harmony and unity, but is exactly oriented towards it.

Distinction vs. separation. Neo-Calvinist philosophers, most notably Herman Dooyeweerd, have heavily criticized the traditional Reformed distinctions between nature and grace, body and soul, and sacred and secular, labeling them as pagan dualisms. However, this critique fails to recognize the vital scholastic difference between a distinction (distinctio) and a separation (separatio).

Holistic duality. Distinguishing between the physical body and the immortal soul does not imply a Platonic dualism that views matter as evil. Rather, historic Reformed theology maintains that body and soul are two distinct, God-created aspects of a unified human person, destined to be reunited in the eschatological resurrection.

The two kingdoms. Similarly, distinguishing between the natural realm (governed by common grace and natural law) and the spiritual realm (governed by special grace and Scripture) does not divide life into autonomous zones. It simply recognizes that the Triune God rules over all of life, but does so through different administrations and for different ends.

• Dooyeweerd's "Reformational philosophy" was heavily influenced by Kantian transcendentalism.
• Reformed orthodoxy rejected the Roman Catholic donum superadditum but maintained the nature-grace distinction.
• A true dualism pits two principles in irreconcilable conflict; a biblical distinction maintains their harmonious unity.

9. Covenant epistemology aims at love, wisdom, and eschatological hope

Epistemology is ultimately about submission to and trust in authority, and in this case, it means submission to the revealed will of the covenant Lord in order to know and love him.

Covenantal knowing. Epistemology is not merely the cold, abstract acquisition of raw data; it is a covenantal relationship established by the Triune God. In the pre-fall covenant of works, Adam was called to obtain knowledge and wisdom by submitting to God's authoritative commands, thereby demonstrating his love and fidelity.

The goal of love. True knowledge is personal, relational, and transformative, culminating in the love of God and neighbor. In the Scriptures, "knowing" is intimately connected with covenantal faithfulness and obedience, while "forgetting" is equated with rebellion and spiritual adultery.

Eschatological transformation. Epistemology is also inherently eschatological, designed to lead humanity from a natural, probationary state to an indefectible, glorified state. Through union with the last Adam, Jesus Christ, the Holy Spirit restores our cognitive faculties so that we may rightly know, love, and be conformed to the divine image.

• God created humanity within the context of the covenant of works.
• The tree of the knowledge of good and evil was a test of epistemic submission.
• The last Adam perfectly fulfilled the covenant of works, securing eschatological life for His people.

10. Apologetics requires the humble use of evidence and common grace

Whether we like it or not, criticism can touch the essence of our religion, because religion has become incarnate, and for our sakes had to become incarnate and make itself vulnerable in historic form.

The role of evidence. While the Holy Spirit alone can sovereignly regenerate a fallen heart to savingly embrace the gospel, the Christian apologist must not shy away from presenting historical and scientific evidence. God has condescended to reveal Himself in history, making the truth of the gospel vulnerable to historical investigation and verification.

Common grace in action. Because of common grace, unbelievers can possess true, though non-saving, knowledge about the natural world. Christians can and should learn from the scientific, artistic, and philosophical insights of non-Christians, recognizing that all truth ultimately originates from the Triune God.

Apologetic humility. Defending the faith must be characterized by gentleness, respect, and intellectual humility. Rather than claiming to possess an exhaustive, imperialistic worldview that explains every detail of the universe, Christians should humbly point others to the two books of nature and Scripture, which testify to the glory of the Creator.

• Apologetics refutes intellectual objections, clarifies truth, and edifies believers.
• The apostle Paul utilized pagan poets and natural law in his apologetic at Mars Hill.
• Christ provided physical, empirical proofs of His resurrection to His doubting disciples.

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