Lecture 1-3: General and Special Revelation

These two texts, read together, supply the biblical basis for general revelation and its limits at the same time. Psalm 19 describes creation's testimony in confident, almost triumphant terms: the heavens "declare," "pour out speech," their voice reaching "to the end of the world" — this is not a whisper easily missed but a declaration heard everywhere. Paul's argument in Romans, written centuries later about Gentiles who have no access to Israel's special revelation, draws directly on this same confidence: God's "everlasting power and divinity" are "clearly seen," which is exactly why those who fail to honor God on the basis of this revelation are "without excuse" (v. 20) rather than innocently ignorant. But Paul's very next move (vv. 21-23, not quoted above but essential to the argument) is to describe what actually happens to this clear revelation in fallen human hands: it is suppressed, and the suppression leads not to honest agnosticism but to idolatry — trading the true God's glory for images of birds, animals, and creeping things. The revelation is clear; the reception is not. That gap is exactly what this lecture's central disagreement is about.

Defining the two channels

General revelation is God's self-disclosure through the created order and the human conscience, available in principle to every person regardless of geography, culture, or access to Scripture. Psalm 19:1-4 is the classic poetic statement of general revelation through creation; Romans 2:14-15 (previewed here, engaged again in Chapter 2 alongside the moral argument for God's existence) extends the category to conscience — Gentiles who have no written law nevertheless "show the work of the law written in their hearts."

Special revelation is God's more specific self-disclosure, given not to everyone automatically but through particular historical acts and words: to Israel through the prophets and the Law, and supremely and finally in Jesus Christ, and now recorded in Scripture. Special revelation is what tells a reader that the Creator revealed in Psalm 19 is triune, that he has acted to redeem a fallen humanity through the incarnation, death, and resurrection of his Son, and countless other specific claims general revelation alone could never yield — no amount of careful observation of the night sky establishes that God became incarnate in first-century Judea.

The classical distinction is not a ranking by importance so much as a distinction by scope and specificity: general revelation is broad but limited in content; special revelation is narrower in its historical mode of transmission but far richer in content. Both, on the classical account, are genuinely revelation — genuine, if partial, self-disclosures of God, not merely human religious intuition mistaken for revelation.

What Romans 1:19-20 actually claims

Paul's argument in Romans 1 is doing careful, specific work, and it is worth being precise about what it claims and does not claim. It claims that God's "everlasting power and divinity" (not, notably, his triunity, his redemptive plan, or the specifics of his moral law) are "clearly seen" through "the things that are made" — creation itself functions as a kind of evidence. It claims this revelation is sufficient to leave its recipients "without excuse" for failing to honor God appropriately in response to it (v. 20-21). And in the verses immediately following (not quoted at length above, but essential: vv. 21-23), it describes the actual, empirical outcome: rather than glorifying God on the strength of this revelation, "their senseless heart was darkened," and they "traded the glory of the incorruptible God for the likeness of an image of corruptible man, and of birds, and four-footed animals, and creeping things" — Paul's description of the origin of idolatry. The text, in other words, presents general revelation as objectively adequate to establish real culpability, while simultaneously describing its actual reception among fallen human beings as suppression and distortion rather than clear-eyed acknowledgment.

The Catholic natural theology tradition's estimate

Thomas Aquinas, working within the broader natural theology tradition, held that unaided human reason — reflecting carefully on the created order without appeal to special revelation — can establish substantial and specific truths about God: not merely a vague sense of "something transcendent," but God's existence (the famous "five ways" of Summa Theologiae I.2.3, examined at length in Chapter 2), and further truths such as God's unity, simplicity, goodness, and eternity, all developed prior to any appeal to revealed doctrine in the Summa's structure. On this view, sin damages the will more than it damages reason's basic capacity to follow a sound argument; a careful thinker, believer or not, can in principle trace the argument from an ordered, contingent universe to a necessary, uncaused first cause and arrive at real, though incomplete, knowledge of God. This confidence in natural theology has remained a durable feature of Catholic theology into the modern period; the First Vatican Council (1870) explicitly taught that God's existence "can be known with certainty from the created world by the natural light of human reason."

Calvin's more cautious estimate

John Calvin agreed that general revelation is objectively clear — his language in the Institutes echoes Romans 1 closely, describing the created order as a "theater" or "mirror" displaying God's glory everywhere a person looks. Where Calvin differs from the Thomistic tradition is in his estimate of what fallen human reason actually does with that clear revelation. Calvin famously describes the human mind as a "factory of idols" (Institutes I.11.8), constantly manufacturing substitute objects of worship rather than acknowledging the true God plainly displayed before it — a reading directly informed by Romans 1:21-23's account of the move from clear revelation to idolatry. For Calvin, the problem is not that general revelation is unclear or that the argument from creation to Creator is logically weak; the problem is that sin has corrupted the faculty doing the reasoning, so that unaided natural theology reliably produces distorted results (idolatry, false religion) rather than sound knowledge of the true God, even when the evidence itself is entirely adequate. This is the doctrine traditionally called the "noetic effects of sin" — noetic meaning pertaining to the mind or intellect: sin's damage is not confined to the will and affections but extends to the reasoning process itself.

This is a point where readers will not agree. Catholic and much of the classical natural theology tradition, represented by Aquinas, hold that unaided reason retains enough integrity after the fall to establish significant, specific truths about God, including his existence — a confidence carried into the arguments examined across Chapter 2. The Reformed tradition, represented here by Calvin and pressed further in the twentieth century by Cornelius Van Til's presuppositionalism (previewed here, engaged directly in Chapter 2, lecture 2-5), holds that general revelation's objective clarity does not translate into reliable natural knowledge of God once the noetic effects of sin are taken into account, and is correspondingly more skeptical of natural theology's evidential power considered independently of special revelation and the Spirit's work. Both traditions affirm Romans 1's claim that unbelievers are without excuse; they disagree sharply about why the excuse fails and what that implies about the value of philosophical arguments for God's existence.

5. Going to the Sources

• Thomas Aquinas, Summa Theologiae I, Question 2, Article 3 — the "five ways," Aquinas's own compact statement of what he believes reason can establish about God's existence from observation of the created order.
• John Calvin, Institutes of the Christian Religion, Book I, Chapters 3-5, especially I.5.15 (the "theater of glory" language) and I.11.8 (the human mind as an "idol factory"), for Calvin's own case that general revelation's clarity does not guarantee its right reception.
• Romans 1:18-32 in full — read past verse 20 to see Paul's own account (vv. 21-23) of what happens to clear revelation when it meets a fallen mind, the passage Calvin draws on directly.