The Power and Limits of Natural Theology
Nov 23rd, 2007 by Hugh
With all the attention J.P. Moreland’s ETS paper is directing at issues of natural theology and the proper sort of commitment to the Bible, I’m looking for some boundaries on these questions.
Ten years ago, Michael Horton wrote on Calvin’s take on the limits of natural theology and concludes that unbelievers are not bereft of reason or truth; God’s common grace should not be discounted in these matters. But it is only when the Holy Spirit "notarizes" revealed truth in the heart of unbelievers that there is power to save:
Calvin also insists that [knowledge of God implanted in the conscience] is legal rather than evangelical in character. This is crucial especially for Reformed believers today, when this distinction seems to be fading. Everyone knows God, but as Creator, Law-Giver, and Judge. "There is within the human mind, and indeed by natural instinct, an awareness of divinity [sensus Divinitatis]." Calvin argues that there is a great deal of common ground in creation for agreement on general principles of morality, justice, beauty, and even truth. One does not require special revelation in order to create a reasonably just society, a beautiful work of art, or even a common sense of morality based on the law written on the conscience (2.2.15). Surely, Christians and non-Christians could agree on many issues related to the common good. And, we can infer (given his positive evaluation of many of the advances of philosophy in secular matters) that Calvin would approve of appealing to philosophical arguments in apologetics…
Calvin finds the inscripturated Word to be the only rock in a whirlpool of subjective opinion. "Hence the Scriptures obtain full authority among believers only when men regard them as having sprung from heaven, as if there the living words of God were heard" (1.7.1). The Word and the Spirit belong together, and thus Calvin moves to the role of the Spirit’s witness, "stronger than all proof." Credibility in doctrine depends on our full confidence in God’s Word. The prophets invoke God’s name for their writings with great care and purpose. Again, the central concern for Calvin is pastoral; he seeks to care for those whose consciences would vacillate and find no comfort. We must rise above human reasoning, judgments and conjectures and this can only be done when the Holy Spirit joins the Word as its "notary public." This is no capitulation to fideism in the face of poor arguments, an evasion of the critical questions…
We have some common ground with unbelievers. In nature, there is some revelation about God. But nature can only tell us that he is a Judge; it does not tell us of his fatherly kindness in the provision of Christ. Nature provides legal knowledge of God, but only Scripture reveals the Gospel, the evangelical knowledge of Christ.

