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Free Will in Aquinas and the Holy Scriptures Compared

~15 min read 7 sections Philosophy · Moral Responsibility Decision Making
Abstract

This paper examines Thomas Aquinas's philosophical defense of free will, as presented in the Summa Theologica, and compares it with both supporting and opposing arguments drawn from the Holy Scriptures. Drawing on Aristotle's concept of rational inclination toward ends, Aquinas argues that free will is intrinsically inviolable by human force, though it may be influenced by external stimuli, including fear and circumstance. The paper then evaluates four Biblical arguments in favor of free will — grounded in divine justice, salvation through belief, examples of human disobedience, and direct scriptural commands to choose — while also exploring the apparent tension posed by God's hardening of Pharaoh's heart. The paper concludes that Aquinas's account, while largely consistent with Scripture, does not fully address the possibility of divine intervention overriding human freedom.

Key Takeaways
  • Introduction: Aquinas, Aristotle, and the Question of Free Will: Situating Aquinas in rational theological tradition
  • Aquinas's Philosophical Defense of Free Will: Aquinas refutes determinism using Aristotelian reasoning
  • Biblical Arguments For and Against Free Will: Four scriptural arguments supporting human free choice
  • Human Rationality, the Good, and the Root of Sin: Sin as misapplied rationality in Aquinas and Scripture
  • Free Will, Violence, and the Inviolability of the Will: Why physical force cannot compel the will
  • Fear, Coercion, and the Limits of Compulsion: Fear influences but does not eliminate free choice
  • Divine Omnipotence and the Limits of Aquinas's Account: God's power poses a challenge Aquinas does not fully resolve
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What makes this paper effective

  • The paper systematically moves between philosophical argument and scriptural evidence, testing Aquinas's claims against specific Biblical passages rather than treating the two sources as separate domains.
  • It presents both sides honestly — acknowledging where Aquinas's answers are strong and where they fall short — rather than simply endorsing one position.
  • The use of direct quotations from the Summa Theologica and the King James Bible grounds abstract claims in primary textual evidence throughout.

Key academic technique demonstrated

The paper demonstrates comparative theological analysis: it takes a single doctrinal concept (free will) and evaluates it simultaneously through a philosophical framework (Aquinas/Aristotle) and a scriptural framework (Old and New Testament). This comparative method allows the writer to identify genuine tensions — such as the Pharaoh problem — that neither source alone resolves, and to propose a nuanced synthesis rather than a simple verdict.

Structure breakdown

The paper opens by situating Aquinas within the Aristotelian tradition and stating its central claim. It then outlines Aquinas's philosophical argument for free will, followed by a four-part examination of Biblical evidence. Subsequent sections apply Aquinas's theory to specific scenarios — rational choice and sin, physical violence, and fear-induced coercion — testing each against scriptural parallels. The paper closes by identifying the one area where Aquinas's account is genuinely inadequate: divine intervention in human willing, as illustrated by the Pharaoh narrative.

Essay 2,901 words

Introduction: Aquinas, Aristotle, and the Question of Free Will

Thomas Aquinas is recognized by the Orthodox as one of the foundational theologians, particularly in that he provided an important step toward the Renaissance by helping to reacquaint Christianity with Aristotle, whom he refers to throughout his work as "the Philosopher." As one who draws inspiration from Aristotle, he is particularly interested in rational philosophy as applied to the realm of religion and theology. This makes his defense of free will particularly strong, though at points one feels he lacks the necessary sense of ambiguity to completely address the Biblical texts. What is important to glean from his work, however, is a message that is also prominent in the Scriptures: that man is "made to God's image, in so far as the image implies an intelligent being endowed with free-will and self-movement" (Summa Theologica, II:1:1).

Some thinkers believe that humans do not have free will, but that our actions are determined either by our environment or by God himself. Thomas Aquinas recognizes and addresses these objections masterfully. One objection is that our actions do not display free will because they are determined by what modern functionalists would call outside stimuli, resulting entirely from external determining factors. He answers this by explaining that free will is an intrinsic act, though it can have extrinsic influences. Free will is defined by the inclination of the knowledgeable mind toward a specific end — and while the desirability or possibility of an end may be determined by circumstances, the inclination itself resides in the will. His response to the claim that free will cannot exist because God determines our future and holds all our movements in his mind is somewhat less satisfactory. He mainly suggests that God's influence is similar to any other extrinsic influence, but when he cannot entirely sustain this point in argument, he draws his conclusion from definitions. This needs to be addressed in more detail to be completely understood. Nevertheless, the primary threat to the doctrine of free will in our modern time does come from behaviorists and their ilk, who suggest that outside forces control the mind — and this Aquinas refutes neatly.

Aquinas's Philosophical Defense of Free Will

His argument for free will explains that while a rock that is thrown does not have free will in deciding to fall — because it has no knowledge or decision-making power — a human who jumps and falls possesses knowledge of the reason behind their action, and falls according to the inclination of their desires. Drawing from Aristotle, Aquinas defines will as being primarily based in knowledge of intended ends and in the inclination that leads to actions toward those ends. He writes: "those things which have a knowledge of the end are said to move themselves because there is in them a principle by which they not only act but also act for an end... Therefore, since man especially knows the end of his work, and moves himself, in his acts especially is the voluntary to be found." (ST: II: 6:1)

Aquinas presents a very rational argument that, while Christian in nature, does not depend on Scripture for its entire justification. However, it is also possible to construct arguments for and against free will from Scripture alone.

5 Sections Hidden · 1,590 words
Biblical Arguments For and Against Free Will380 words
If one were to object to the idea of free will from a Biblical standpoint, one might bring up God's omnipotence as typified in verses such as John 15:5, which says: "Without Me you can do nothing." Many theologians, especially less experienced ones, might think that this suggests God makes all decisions himself, and that our own choices are merely an illusion covering decisions he already determined we would make. God's stated foreknowledge of all our choices makes this a seductive…
Human Rationality, the Good, and the Root of Sin210 words
One of the most important points Aquinas makes regarding human actions is that humans always choose to act rationally according to what they perceive as the greatest good in a given situation. This ties in with his Aristotelian sympathies and his view of…
Free Will, Violence, and the Inviolability of the Will260 words
One of the defining features of Aquinas's theory of free will is his claim that free will is impossible to violate. He explains: "The act of the will is nothing else than…
Fear, Coercion, and the Limits of Compulsion320 words
At the same time, Aquinas explains that while violence cannot affect the will itself — only the outcome of the will's expression — the threat of violence or fear does affect the will to a degree. "In things endowed with knowledge, it effects something against the will....…
Divine Omnipotence and the Limits of Aquinas's Account420 words
In short, both Aquinas and the Bible imply that while external actions can be thwarted or forced, internal free will cannot be violated by any human — it is intrinsically incapable of being compelled to act or to refrain from action. As Matthew 10:28 says: "fear not them which kill the body,…
Key Concepts in This Paper
Free Will Summa Theologica Rational Inclination Divine Omnipotence Biblical Justice Voluntary Action Extrinsic Influence Coercion and Fear Pharaoh's Heart Salvation and Belief
Cite This Paper
PaperDue. (2026). Free Will in Aquinas and the Holy Scriptures Compared. PaperDue. https://www.paperdue.com/study-guide/free-will-aquinas-holy-scriptures-159813

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